Question 1

Key Features

1
          Adaptable Installation

Multi-angle mounting system (0°, 25°, 45°) seamlessly integrates with villas, gabled roofs, flat roofs, and multi-storey residences—even irregular slopes. This flexibility ensures hassle-free, precise installation on any home.

2
          High-Efficiency Heat Collection

With a 95% solar absorption rate, SOLETKS heats water efficiently even on cloudy days. Reduces household energy costs and carbon emissions, supporting an eco-conscious lifestyle.

3
          Natural Circulation Design

Leverages density difference between hot and cold water to circulate heat without electricity. Eliminates pump maintenance, lowers operating costs, and ensures continuous hot water even during power outages.

4
          Diverse Capacity Options

Tailored for every household size and demand:

150L
            Perfect for 3-person families

200L
            Ideal for medium households

300L
            Best for larger families

5
          Pressurized Operation

Pressurized storage tank maintains consistent water pressure at the showerhead, ensuring comfortable flow regardless of remaining hot water volume.

6
          Durable and Hygienic Tank

Enamel-coated inner tank baked at over 830℃ resists corrosion and scaling. Magnesium anodes neutralize corrosive substances, guaranteeing long-lasting, clean water.

Core Technology & Certification

Jacket Heat Exchange
          
            Flat-plate collectors heat an internal medium that transfers warmth to the water tank, minimizing heat loss and ensuring reliable hot water even in winter.

High-Quality Insulation
          
            50mm polyurethane foam layer (0.022 W/(m·K)) locks in heat, keeping water warm day and night without reheating.

Solar Keymark Certified
          
            International certification guaranteeing heat collection efficiency, insulation performance, and safety standards for reliable operation.

Solar Keymark Certified

.product-showcase-section {
      width: 100%;
      background: #ffffff;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      padding: 80px 0;
      position: relative;
      overflow: hidden;
    }

.product-showcase-section::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 100%;
      background: 
        radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(96, 165, 250, 0.05) 0%, transparent 50%);
      pointer-events: none;
    }

.product-showcase-section .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 30px;
      position: relative;
      z-index: 1;
    }

/* 产品展示区 */
    .product-showcase-section .showcase-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
      margin-bottom: 80px;
    }

.product-showcase-section .showcase-content .subtitle {
      font-size: 14px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 2px;
      color: #3b82f6;
      margin-bottom: 15px;
    }

.product-showcase-section .showcase-content .main-title {
      font-size: 42px;
      font-weight: 800;
      color: #0f172a;
      line-height: 1.2;
      margin-bottom: 20px;
    }

.product-showcase-section .showcase-content .tagline {
      font-size: 24px;
      font-weight: 600;
      color: #3b82f6;
      margin-bottom: 25px;
    }

.product-showcase-section .showcase-content .description {
      font-size: 16px;
      line-height: 1.8;
      color: #64748b;
      margin-bottom: 30px;
    }

.product-showcase-section .showcase-image {
      position: relative;
    }

.product-showcase-section .showcase-image img {
      width: 100%;
      height: auto;
      border-radius: 20px;
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
      transition: transform 0.5s ease;
    }

.product-showcase-section .showcase-image:hover img {
      transform: scale(1.03);
    }

/* 特性标签 */
    .product-showcase-section .feature-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

.product-showcase-section .feature-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: linear-gradient(135deg, #eff6ff, #dbeafe);
      border: 2px solid #3b82f6;
      border-radius: 50px;
      padding: 10px 20px;
      font-size: 14px;
      font-weight: 600;
      color: #1e40af;
      transition: all 0.3s ease;
    }

.product-showcase-section .feature-tag:hover {
      transform: translateY(-2px);
      box-shadow: 0 4px 15px rgba(59, 130, 246, 0.2);
    }

.product-showcase-section .feature-tag svg {
      width: 18px;
      height: 18px;
      color: #3b82f6;
    }

/* 产品型号表格区 */
    .product-showcase-section .models-section {
      margin-top: 80px;
    }

.product-showcase-section .models-title {
      font-size: 36px;
      font-weight: 800;
      color: #0f172a;
      text-align: center;
      margin-bottom: 50px;
      position: relative;
      padding-bottom: 20px;
    }

.product-showcase-section .models-title::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background: linear-gradient(90deg, #3b82f6, #60a5fa);
      border-radius: 2px;
    }

/* 响应式表格容器 */
    .product-showcase-section .table-container {
      overflow-x: auto;
      background: white;
      border-radius: 20px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
      padding: 30px;
    }

.product-showcase-section .models-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 900px;
    }

.product-showcase-section .models-table thead {
      background: linear-gradient(135deg, #3b82f6, #2563eb);
    }

.product-showcase-section .models-table th {
      padding: 18px 15px;
      text-align: left;
      font-size: 14px;
      font-weight: 700;
      color: white;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      white-space: nowrap;
    }

.product-showcase-section .models-table th:first-child {
      border-radius: 12px 0 0 0;
    }

.product-showcase-section .models-table th:last-child {
      border-radius: 0 12px 0 0;
    }

.product-showcase-section .models-table tbody tr {
      border-bottom: 1px solid #e2e8f0;
      transition: all 0.3s ease;
    }

.product-showcase-section .models-table tbody tr:hover {
      background: #f8fafc;
      transform: scale(1.01);
    }

.product-showcase-section .models-table tbody tr:last-child {
      border-bottom: none;
    }

.product-showcase-section .models-table td {
      padding: 20px 15px;
      font-size: 14px;
      color: #475569;
    }

.product-showcase-section .models-table .model-name {
      font-weight: 700;
      color: #3b82f6;
      font-size: 15px;
    }

.product-showcase-section .models-table .highlight-value {
      font-weight: 600;
      color: #0f172a;
    }

/* 注释信息 */
    .product-showcase-section .table-note {
      margin-top: 25px;
      padding: 20px 25px;
      background: linear-gradient(135deg, #fef3c7, #fde68a);
      border-left: 4px solid #f59e0b;
      border-radius: 12px;
      display: flex;
      align-items: center;
      gap: 15px;
    }

.product-showcase-section .table-note svg {
      width: 24px;
      height: 24px;
      color: #f59e0b;
      flex-shrink: 0;
    }

.product-showcase-section .table-note-text {
      font-size: 15px;
      font-weight: 600;
      color: #92400e;
    }

/* 响应式 */
    @media (max-width: 992px) {
      .product-showcase-section {
        padding: 60px 0;
      }
      .product-showcase-section .showcase-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .product-showcase-section .showcase-content .main-title {
        font-size: 36px;
      }
      .product-showcase-section .models-title {
        font-size: 30px;
      }
    }

@media (max-width: 768px) {
      .product-showcase-section .table-container {
        padding: 20px;
      }
      .product-showcase-section .models-table {
        font-size: 13px;
      }
      .product-showcase-section .models-table th,
      .product-showcase-section .models-table td {
        padding: 12px 10px;
      }
    }

@media (max-width: 576px) {
      .product-showcase-section {
        padding: 50px 0;
      }
      .product-showcase-section .showcase-content .main-title {
        font-size: 30px;
      }
      .product-showcase-section .showcase-content .tagline {
        font-size: 20px;
      }
      .product-showcase-section .feature-tags {
        justify-content: center;
      }
      .product-showcase-section .table-note {
        flex-direction: column;
        text-align: center;
      }
    }

SOLETKS Solar Technology
        Flat-Panel Solar Water Heater
        Reliable Hot Water, Sustainable Living
        
          Experience a smarter way to heat water. The SOLETKS Flat-Panel Solar Water Heater combines cutting-edge solar technology with practical design to provide efficient, consistent, and eco-friendly hot water for modern households. Even on cloudy days, it delivers comfort and reliability while reducing energy costs and carbon footprint.

95% Solar Absorption

All-Weather Operation

Energy Cost Savings

Product Models

Model
              Collector
              Tank (L)
              Dimensions
              Insulation
              Working Pressure
              Inner Tank
              Outer Tank
              Auxiliary Heating

Soletks-ET-150
              Soletks2.0-2(x1)
              150
              φ520*1300
              PU foam 50 mm
              7 bar
              2.0 mm
              Powder-coated steel
              1.5 KW

Soletks-ET-200
              Soletks2.5-2(x1)
              200
              φ580*1310
              PU foam 50 mm
              7 bar
              2.5 mm enamelled
              Powder-coated steel
              2.0 KW

Soletks-ET-300
              Soletks2.0-2(x2)
              300
              φ580*1830
              PU foam 50 mm
              7 bar
              2.5 mm enamelled
              Powder-coated steel
              2.0 KW

Corrosion Protection: All models equipped with magnesium anode for enhanced durability and water quality.

// 滚动动画
  const observerOptions = {
    threshold: 0.1,
    rootMargin: '0px 0px -50px 0px'
  };

document.querySelectorAll('.showcase-wrapper > *, .models-section').forEach(el => {
    el.style.opacity = '0';
    el.style.transform = 'translateY(30px)';
    el.style.transition = 'all 0.8s ease';
    observer.observe(el);
  });
});

.application-advantages-section {
      width: 100%;
      background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      padding: 80px 0;
      position: relative;
      overflow: hidden;
    }

.application-advantages-section::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: 
        radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(96, 165, 250, 0.03) 0%, transparent 50%);
      pointer-events: none;
    }

.application-advantages-section .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 30px;
      position: relative;
      z-index: 1;
    }

/* 通用标题样式 */
    .application-advantages-section .section-title {
      font-size: 36px;
      font-weight: 800;
      color: #0f172a;
      text-align: center;
      margin-bottom: 20px;
      position: relative;
      padding-bottom: 20px;
    }

.application-advantages-section .section-title::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background: linear-gradient(90deg, #3b82f6, #60a5fa);
      border-radius: 2px;
    }

.application-advantages-section .section-subtitle {
      font-size: 16px;
      line-height: 1.8;
      color: #64748b;
      text-align: center;
      max-width: 900px;
      margin: 0 auto 60px;
    }

/* ========== I. 应用场景区域 ========== */
    .application-advantages-section .scenarios-wrapper {
      margin-bottom: 100px;
    }

.application-advantages-section .scenarios-content {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
      margin-bottom: 50px;
    }

.application-advantages-section .scenarios-image {
      position: relative;
      border-radius: 20px;
      overflow: hidden;
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
    }

.application-advantages-section .scenarios-image img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.5s ease;
    }

.application-advantages-section .scenarios-image:hover img {
      transform: scale(1.05);
    }

.application-advantages-section .scenarios-text .intro {
      font-size: 17px;
      line-height: 1.9;
      color: #475569;
      margin-bottom: 30px;
      text-align: justify;
    }

/* 应用场景卡片 */
    .application-advantages-section .scenario-cards {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

.application-advantages-section .scenario-card {
      background: white;
      border-radius: 16px;
      padding: 30px 20px;
      text-align: center;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
      transition: all 0.3s ease;
      border: 2px solid transparent;
    }

.application-advantages-section .scenario-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 12px 30px rgba(59, 130, 246, 0.15);
      border-color: #3b82f6;
    }

.application-advantages-section .scenario-card .icon {
      width: 70px;
      height: 70px;
      background: linear-gradient(135deg, #3b82f6, #60a5fa);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 20px;
      box-shadow: 0 8px 20px rgba(59, 130, 246, 0.3);
    }

.application-advantages-section .scenario-card .icon svg {
      width: 36px;
      height: 36px;
      color: white;
    }

.application-advantages-section .scenario-card .name {
      font-size: 18px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 10px;
    }

.application-advantages-section .scenario-card .desc {
      font-size: 13px;
      line-height: 1.5;
      color: #64748b;
    }

/* 角度支架特性 */
    .application-advantages-section .angle-brackets {
      margin-top: 40px;
      background: linear-gradient(135deg, #eff6ff, #dbeafe);
      border: 2px solid #3b82f6;
      border-radius: 20px;
      padding: 30px;
      display: flex;
      align-items: center;
      gap: 25px;
    }

.application-advantages-section .angle-brackets .icon-wrapper {
      width: 80px;
      height: 80px;
      background: linear-gradient(135deg, #3b82f6, #2563eb);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
    }

.application-advantages-section .angle-brackets .icon-wrapper svg {
      width: 40px;
      height: 40px;
      color: white;
    }

.application-advantages-section .angle-brackets .text-content .title {
      font-size: 20px;
      font-weight: 700;
      color: #1e40af;
      margin-bottom: 10px;
    }

.application-advantages-section .angle-brackets .text-content .angles {
      display: flex;
      gap: 15px;
      margin-bottom: 12px;
    }

.application-advantages-section .angle-brackets .angle-tag {
      background: white;
      border: 2px solid #3b82f6;
      border-radius: 50px;
      padding: 8px 18px;
      font-size: 16px;
      font-weight: 700;
      color: #3b82f6;
    }

.application-advantages-section .angle-brackets .text-content .description {
      font-size: 14px;
      line-height: 1.6;
      color: #1e40af;
    }

/* ========== II. 核心优势区域 ========== */
    .application-advantages-section .advantages-wrapper {
      margin-top: 100px;
    }

.application-advantages-section .advantages-intro {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
      margin-bottom: 60px;
    }

.application-advantages-section .advantages-intro .image-wrapper {
      position: relative;
      border-radius: 20px;
      overflow: hidden;
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
    }

.application-advantages-section .advantages-intro .image-wrapper img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.5s ease;
    }

.application-advantages-section .advantages-intro .image-wrapper:hover img {
      transform: scale(1.05);
    }

.application-advantages-section .advantages-intro .intro-text {
      font-size: 17px;
      line-height: 1.9;
      color: #475569;
      text-align: justify;
    }

/* 优势卡片网格 */
    .application-advantages-section .advantages-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

.application-advantages-section .advantage-card {
      background: white;
      border-radius: 20px;
      padding: 35px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
      transition: all 0.3s ease;
      border: 2px solid transparent;
    }

.application-advantages-section .advantage-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 12px 40px rgba(59, 130, 246, 0.15);
      border-color: #3b82f6;
    }

.application-advantages-section .advantage-card .card-header {
      display: flex;
      align-items: center;
      gap: 20px;
      margin-bottom: 20px;
    }

.application-advantages-section .advantage-card .number {
      width: 50px;
      height: 50px;
      background: linear-gradient(135deg, #3b82f6, #60a5fa);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      font-weight: 800;
      color: white;
      flex-shrink: 0;
      box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
    }

.application-advantages-section .advantage-card .card-title {
      font-size: 20px;
      font-weight: 700;
      color: #0f172a;
      line-height: 1.3;
    }

.application-advantages-section .advantage-card .card-description {
      font-size: 15px;
      line-height: 1.8;
      color: #64748b;
      text-align: justify;
    }

.application-advantages-section .advantage-card .highlight-box {
      margin-top: 20px;
      background: linear-gradient(135deg, #fef3c7, #fde68a);
      border-left: 4px solid #f59e0b;
      border-radius: 12px;
      padding: 15px 20px;
    }

.application-advantages-section .advantage-card .highlight-box .highlight-title {
      font-size: 15px;
      font-weight: 700;
      color: #92400e;
      margin-bottom: 8px;
    }

.application-advantages-section .advantage-card .highlight-box .highlight-text {
      font-size: 14px;
      line-height: 1.6;
      color: #92400e;
    }

/* 容量选项 */
    .application-advantages-section .capacity-options {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 15px;
      margin-top: 20px;
    }

.application-advantages-section .capacity-item {
      background: linear-gradient(135deg, #eff6ff, #dbeafe);
      border: 2px solid #3b82f6;
      border-radius: 12px;
      padding: 20px 15px;
      text-align: center;
      transition: all 0.3s ease;
    }

.application-advantages-section .capacity-item:hover {
      transform: scale(1.05);
      box-shadow: 0 8px 20px rgba(59, 130, 246, 0.2);
    }

.application-advantages-section .capacity-item .value {
      font-size: 32px;
      font-weight: 900;
      color: #3b82f6;
      margin-bottom: 5px;
    }

.application-advantages-section .capacity-item .label {
      font-size: 13px;
      color: #475569;
      font-weight: 600;
    }

/* 响应式设计 */
    @media (max-width: 992px) {
      .application-advantages-section {
        padding: 60px 0;
      }
      .application-advantages-section .section-title {
        font-size: 30px;
      }
      .application-advantages-section .scenarios-content,
      .application-advantages-section .advantages-intro {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .application-advantages-section .scenario-cards {
        grid-template-columns: repeat(2, 1fr);
      }
      .application-advantages-section .advantages-grid {
        grid-template-columns: 1fr;
      }
    }

@media (max-width: 768px) {
      .application-advantages-section .angle-brackets {
        flex-direction: column;
        text-align: center;
      }
      .application-advantages-section .angle-brackets .angles {
        justify-content: center;
      }
      .application-advantages-section .capacity-options {
        grid-template-columns: 1fr;
      }
    }

@media (max-width: 576px) {
      .application-advantages-section {
        padding: 50px 0;
      }
      .application-advantages-section .section-title {
        font-size: 26px;
      }
      .application-advantages-section .scenario-cards {
        grid-template-columns: 1fr;
      }
      .application-advantages-section .advantage-card {
        padding: 25px 20px;
      }
    }

I. Application Scenarios
      
        Versatile installation solutions designed for diverse architectural environments

The solar panel mounting system offers multiple angle brackets (0°, 25°, 45°) to accommodate diverse roof structures. The adjustable bracket angles allow precise alignment with roof slopes, ensuring seamless integration for flat roofs, sloped surfaces, and irregularly angled roofs. This innovative solution effectively addresses the common challenge of "difficult solar panel installation on roofs" by providing adaptable mounting options that perfectly match structural characteristics.

Villa
          Luxury homes with flexible roof designs

Pointed Roof
          Sloped roofs with various angles

Flat Roof
          Modern buildings with horizontal surfaces

Multi-storey Residential
          Apartment buildings and complexes

Adjustable Mounting Angles
          
            0°
            25°
            45°

Multiple bracket angles ensure optimal solar panel positioning for maximum energy collection efficiency across different roof types and orientations.

II. Core Advantages
      
        Five key innovations that redefine solar water heating performance

The efficient utilization of solar energy is crucial in product design. This all-in-one unit boasts a solar absorption ratio of up to 95%, capable of heating even under average sunlight conditions while efficiently collecting heat. Compared to traditional electric or gas water heaters, it requires no substantial energy consumption, saving household expenses and reducing pollution – perfectly aligning with the green living philosophy.

1
            Efficient Heat CollectionMore Efficient Energy Utilization

The efficient utilization of solar energy is crucial in product design. This all-in-one unit boasts a solar absorption ratio of up to 95%, capable of heating even under average sunlight conditions while efficiently collecting heat. Compared to traditional electric or gas water heaters, it requires no substantial energy consumption, saving household expenses and reducing pollution – perfectly aligning with the green living philosophy.

⚡ Energy Savings
            95% solar absorption rate reduces electricity costs by up to 70% annually

2
            Natural CirculationNo Power, More Easy

The water heater adopts the design of non-powered natural circulation, which uses the horizontal density difference between hot and cold to realize water circulation heating. There is no need to consume electricity, reduce operation cost and failure probability, and users do not need to worry about pump maintenance, so they can enjoy stable hot water safely.

🔧 Zero Maintenance
            No pumps, no moving parts – reliable operation for years without service

3
            Multiple Capacity OptionsSuit Family Differences

Different family population, different water use habits, different demand for capacity. A variety of specifications to meet the needs of different families for hot water.

150L
              3-Person Family

200L
              Medium Household

300L
              Large Family

👨‍👩‍👧‍👦 Perfect Sizing
            A family of three selects 150L to meet daily needs; larger families choose 200L/300L

4
            Operating Under PressureEnjoying a Torrential Rain

The water flow fluctuates during the shower, significantly reducing the experience. The water heater operates using a pressure-boosting water storage tank, with the water pressure entirely determined by the tap water pressure – No matter how much hot water remains in the tank, the showerhead maintains a steady flow of water, avoiding the issue of "the more you use, the weaker the flow becomes."

💧 Consistent Pressure
            7 bar working pressure ensures powerful shower flow from first to last drop

5
            Enamel Inner Tank + Magnesium RodDurable and Hygienic

The tank's quality determines both the water heater's lifespan and water quality. The all-in-one unit features an enamel tank with porcelain interior and steel exterior. The ceramic glaze layer is fixed on a specialized steel plate through high-temperature baking at over 830℃, resisting long-term erosion from 100℃ hot water while preventing corrosion and scaling. Combined with magnesium rods for corrosion protection, these rods actively react with corrosive substances in the water, extending tank durability and maintaining clean water quality – giving your family peace of mind with every use.

🛡️ Long-lasting Protection
            830℃ enamel coating + magnesium anode = 10+ years of reliable service

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Our Projects
            Global Solar Energy Excellence
            Pioneering sustainable energy solutions across continents, delivering innovative solar heating and hot water systems.

Featured

Centralized Solar Heating for Saga County Town in Shigatse City
                    
                        2019
                        Shigatse, Tibet
                        107,000 m²
                    
                    EFPC115 large flat-plate collectors provide heating coverage for 107,000 m², replacing traditional coal and yak dung heating. Reduces coal consumption by 2,424 tons annually.
                    
                        World's first high-altitude solar centralized heating
                        First full-chain turnkey solar heating project
                        Tibet's first large-scale solar heating

Get Quote

View Details

Tianjin School TPV Pro+ Heat Pump Project
                        
                            2024
                            Tianjin
                            3,000 m²
                        
                        TPV Pro+ heat pump system meets students' heating needs while generating on-site electricity.

Get Quote

View Details

APEC Summit Hotel Hot Water System
                        
                            2014
                            Beijing
                            50 tons/day
                        
                        Supplies hot water for APEC Summit hotel. Saves 150,000 kWh annually, reduces CO2 by 74 tons.

Get Quote

View Details

Florida Resort Villa Hot Water Project
                        
                            2022
                            Florida, USA
                            200L/day
                        
                        Flat-plate water heaters provide 200L daily hot water for each resort villa.

Get Quote

View Details

Harz Church Hot Water Project
                        
                            2021
                            Germany
                            22 tons/day
                        
                        Engineering-grade collectors in series/parallel configuration provide reliable hot water supply.

Get Quote

View Details

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.featured-image img {
    width: 100%;
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    object-fit: cover;
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.project-featured:hover .featured-image img {
    transform: scale(1.06);
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.featured-badge {
    position: absolute;
    top: 20px;
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    background: linear-gradient(135deg, #3b82f6, #2563eb);
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    font-size: 14px;
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    margin-bottom: 16px;
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.card-actions {
    display: flex;
    gap: 8px;
    margin-top: auto;
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.card-actions .btn-primary,
.card-actions .btn-secondary {
    flex: 1;
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    .container {
        padding: 0 30px;
    }
    
    .section-title {
        font-size: 38px;
    }
    
    .projects-layout {
        gap: 28px;
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    .featured-image {
        height: 260px;
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    .card-image {
        height: 140px;
    }
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    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
        gap: 20px;
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    .featured-image {
        height: 300px;
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    .card-image {
        height: 180px;
    }
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        padding: 60px 0;
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    .container {
        padding: 0 20px;
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    .section-header {
        margin-bottom: 40px;
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    .section-title {
        font-size: 32px;
    }
    
    .section-description {
        font-size: 16px;
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    .featured-image {
        height: 240px;
    }
    
    .featured-content {
        padding: 24px;
    }
    
    .featured-content h3 {
        font-size: 21px;
    }
    
    .card-content h4 {
        font-size: 16px;
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    .featured-actions {
        flex-direction: column;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        justify-content: center;
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    .card-actions {
        flex-direction: column;
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    .projects-grid {
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    .card-image {
        height: 200px;
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@media (max-width: 480px) {
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        font-size: 28px;
    }
    
    .featured-image {
        height: 220px;
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    .featured-content h3 {
        font-size: 19px;
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.certifications-section {
      width: 100%;
      background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
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      left: 0;
      right: 0;
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.certifications-container {
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/* Section Header */
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      margin-bottom: 60px;
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      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 2px;
      color: #3b82f6;
      margin-bottom: 15px;
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      background: rgba(59, 130, 246, 0.1);
      border-radius: 25px;
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.certifications-title {
      font-size: 44px;
      font-weight: 800;
      color: #1e293b;
      margin: 0 0 20px 0;
      line-height: 1.2;
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.certifications-title .highlight {
      background: linear-gradient(135deg, #3b82f6, #2563eb);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
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.certifications-description {
      font-size: 17px;
      line-height: 1.7;
      color: #64748b;
      max-width: 900px;
      margin: 0 auto;
    }

/* Tabs Navigation */
    .cert-tabs {
      display: flex;
      justify-content: center;
      gap: 12px;
      margin-bottom: 50px;
      flex-wrap: wrap;
    }

.cert-tab {
      padding: 12px 28px;
      font-size: 15px;
      font-weight: 600;
      color: #64748b;
      background: white;
      border: 2px solid #e2e8f0;
      border-radius: 50px;
      cursor: pointer;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

.cert-tab::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
      transition: left 0.5s ease;
    }

.cert-tab:hover {
      border-color: #3b82f6;
      color: #3b82f6;
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
    }

.cert-tab:hover::before {
      left: 100%;
    }

.cert-tab.active {
      background: linear-gradient(135deg, #3b82f6, #2563eb);
      color: white;
      border-color: #3b82f6;
      box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
    }

/* Tab Content */
    .cert-tab-content {
      display: none;
      animation: fadeIn 0.5s ease;
    }

.cert-tab-content.active {
      display: block;
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@keyframes fadeIn {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

/* Certificates Grid - 4 columns */
    .certificates-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 25px;
      margin-bottom: 40px;
    }

.certificate-card {
      background: white;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
      transition: all 0.4s ease;
      cursor: pointer;
      position: relative;
    }

.certificate-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, #3b82f6, #2563eb);
      transform: scaleX(0);
      transition: transform 0.4s ease;
    }

.certificate-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 12px 40px rgba(59, 130, 246, 0.2);
    }

.certificate-card:hover::before {
      transform: scaleX(1);
    }

.certificate-image {
      width: 100%;
      height: 280px;
      overflow: hidden;
      background: #f1f5f9;
      position: relative;
    }

.certificate-image img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      padding: 15px;
      transition: transform 0.5s ease;
    }

.certificate-card:hover .certificate-image img {
      transform: scale(1.08);
    }

.certificate-badge {
      position: absolute;
      top: 12px;
      right: 12px;
      background: linear-gradient(135deg, #3b82f6, #2563eb);
      color: white;
      padding: 5px 12px;
      border-radius: 20px;
      font-size: 10px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
    }

.certificate-info {
      padding: 20px;
    }

.certificate-name {
      font-size: 16px;
      font-weight: 700;
      color: #1e293b;
      margin: 0 0 6px 0;
      line-height: 1.4;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

.certificate-type {
      font-size: 13px;
      color: #64748b;
      margin: 0;
    }

/* Lightbox Modal */
    .lightbox-modal {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.95);
      z-index: 10000;
      justify-content: center;
      align-items: center;
      padding: 40px;
      animation: lightboxFadeIn 0.3s ease;
    }

.lightbox-modal.active {
      display: flex;
    }

@keyframes lightboxFadeIn {
      from {
        opacity: 0;
      }
      to {
        opacity: 1;
      }
    }

.lightbox-content {
      position: relative;
      max-width: 95%;
      max-height: 95%;
      display: flex;
      justify-content: center;
      align-items: center;
      animation: zoomIn 0.4s ease;
    }

@keyframes zoomIn {
      from {
        transform: scale(0.8);
        opacity: 0;
      }
      to {
        transform: scale(1);
        opacity: 1;
      }
    }

.lightbox-content img {
      max-width: 100%;
      max-height: 90vh;
      width: auto;
      height: auto;
      object-fit: contain;
      border-radius: 8px;
      box-shadow: 0 20px 80px rgba(0, 0, 0, 0.5);
    }

.lightbox-close {
      position: fixed;
      top: 30px;
      right: 30px;
      width: 50px;
      height: 50px;
      background: rgba(255, 255, 255, 0.95);
      border: none;
      border-radius: 50%;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.3s ease;
      z-index: 10001;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    }

.lightbox-close:hover {
      background: white;
      transform: rotate(90deg) scale(1.1);
    }

.lightbox-close svg {
      width: 24px;
      height: 24px;
      stroke: #1e293b;
      stroke-width: 2.5;
    }

.lightbox-info {
      position: fixed;
      bottom: 30px;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(255, 255, 255, 0.95);
      padding: 12px 24px;
      border-radius: 30px;
      font-size: 14px;
      color: #1e293b;
      font-weight: 600;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
      backdrop-filter: blur(10px);
    }

/* Responsive Design */
    @media (max-width: 1200px) {
      .certificates-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
      }

.certificate-image {
        height: 260px;
      }
    }

@media (max-width: 992px) {
      .certificates-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
      }

.certificate-image {
        height: 280px;
      }
    }

@media (max-width: 768px) {
      .certifications-section {
        padding: 60px 0;
      }

.certifications-container {
        padding: 0 20px;
      }

.certifications-title {
        font-size: 36px;
      }

.certifications-description {
        font-size: 16px;
      }

.cert-tabs {
        gap: 8px;
      }

.cert-tab {
        padding: 10px 20px;
        font-size: 14px;
      }

.certificate-image {
        height: 240px;
      }

.lightbox-modal {
        padding: 20px;
      }

.lightbox-close {
        top: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
      }

.lightbox-info {
        bottom: 20px;
        font-size: 13px;
        padding: 10px 20px;
      }
    }

@media (max-width: 576px) {
      .certificates-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }

.certificate-image {
        height: 300px;
      }

.certifications-title {
        font-size: 28px;
      }

.lightbox-content img {
        max-height: 80vh;
      }
    }

International Standards
      
        Global Certifications & Quality Assurance

SOLETK Solar products are certified to meet international quality and safety standards, including Solar Keymark, CE, and ISO. Below are the individual certificates for each product, demonstrating SOLETK Solar's commitment to reliability, performance, and compliance.

All Certificates
      ISO Certifications
      Solar Keymark
      Product Certificates

Test Report

Test Report Certificate

Accepted Answer

Quality Assurance Report

Question 2

Solar Keymark Certification

Accepted Answer

European Quality Standard

Question 3

ISO 9001 Quality Management

Accepted Answer

International Organization for Standardization

Question 4

ISO 14001 Environmental Management

Accepted Answer

International Organization for Standardization

Question 5

ISO 45001 Occupational Health & Safety

Accepted Answer

International Organization for Standardization

Question 6

Air Solar Collector

Accepted Answer

Product Certification

Question 7

Flat Plate Solar Collector

Accepted Answer

Product Certification

Question 8

PVT Solar System

Accepted Answer

Product Certification

Question 9

Solar Keymark Certification

Accepted Answer

European Quality Standard

Question 10

Solar Water Heater

Accepted Answer

Product Certification

Question 11

Vacuum Tube Solar Collector

Accepted Answer

Product Certification

Question 12

ISO 9001 Quality Management

Accepted Answer

International Organization for Standardization

Question 13

ISO 14001 Environmental Management

Accepted Answer

International Organization for Standardization

Question 14

ISO 45001 Occupational Health & Safety

Accepted Answer

International Organization for Standardization

Question 15

Solar Keymark Certification

Accepted Answer

European Quality Standard

Question 16

Solar Keymark Certification

Accepted Answer

European Quality Standard

Question 17

Air Solar Collector

Accepted Answer

Product Certification

Question 18

Flat Plate Solar Collector

Accepted Answer

Product Certification

Question 19

PVT Solar System

Accepted Answer

Product Certification

Question 20

Solar Water Heater

Accepted Answer

Product Certification

Question 21

Vacuum Tube Solar Collector

Accepted Answer

Product Certification

Question 22

Solar Integration

Accepted Answer

Advanced flat-plate collector technology maximizing energy efficiency

Question 23

117+ Patents

Accepted Answer

Cutting-edge innovation portfolio protecting proprietary technologies

Question 24

Research Partners

Accepted Answer

Strategic collaboration with leading institutions worldwide

Model	Pengumpul	Tank (L)	Dimensi	Isolasi	Tekanan Kerja	Inner Tank	Outer Tank	Pemanas Bantu
Soletks-ET-150	Soletks2.0-2(x1)	150	φ520*1300	Busa PU 50 mm	7 bar	2.0 mm	Baja berlapis bubuk	1,5 KW
Soletks-ET-200	Soletks2.5-2(x1)	200	φ580*1310	Busa PU 50 mm	7 bar	Bersalut enamel 2,5 mm	Baja berlapis bubuk	2,0 KW
Soletks-ET-300	Soletks2.0-2(x2)	300	φ580*1830	Busa PU 50 mm	7 bar	Bersalut enamel 2,5 mm	Baja berlapis bubuk	2,0 KW

Efisien, Handal, dan Versatile Solar Water Heating

SOLETKS Flat-Panel Solar Water Heater

Key Features

Adaptable Installation

High-Efficiency Heat Collection

Natural Circulation Design

Diverse Capacity Options

Pressurized Operation

Durable and Hygienic Tank

Core Technology & Certification

Jacket Heat Exchange

High-Quality Insulation

Solar Keymark Certified

Flat-Panel Solar Water Heater

Product Models

I. Application Scenarios

II. Core Advantages

Efficient Heat CollectionMore Efficient Energy Utilization

Natural CirculationNo Power, More Easy

Multiple Capacity OptionsSuit Family Differences

Operating Under PressureEnjoying a Torrential Rain

Enamel Inner Tank + Magnesium RodDurable and Hygienic

Global Keunggulan Energi Surya

Pemanas Surya Terpusat untuk Kota Kabupaten Saga di Kota Shigatse

Proyek Pompa Panas TPV Pro+ Sekolah Tianjin

Sistem Air Panas Hotel KTT APEC

Proyek Air Panas Villa Resor Florida

Proyek Air Panas Gereja Harz

Sertifikasi Global & Jaminan Kualitas

Sertifikat Laporan Pengujian

Sertifikasi Solar Keymark

ISO 9001 Manajemen Mutu

ISO 14001 Manajemen Lingkungan

ISO 45001 Kesehatan & Keselamatan Kerja

Kolektor Surya Udara

Kolektor Surya Pelat Datar

Sistem Surya PVT

Sertifikasi Solar Keymark

Pemanas Air Surya

Kolektor Surya Tabung Vakum

ISO 9001 Manajemen Mutu

ISO 14001 Manajemen Lingkungan

ISO 45001 Kesehatan & Keselamatan Kerja

Sertifikasi Solar Keymark

Sertifikasi Solar Keymark

Kolektor Surya Udara

Kolektor Surya Pelat Datar

Sistem Surya PVT

Pemanas Air Surya

Kolektor Surya Tabung Vakum

Memimpin Masa Depan Energi Bersih

Kekuatan Inti Kami

Integrasi Surya

117+ Paten

Mitra Penelitian

SOLETKS – Pilihan Pertama untuk Pelanggan Global

Mari Terhubung

Efficient Heat Collection
More Efficient Energy Utilization

Natural Circulation
No Power, More Easy

Multiple Capacity Options
Suit Family Differences

Operating Under Pressure
Enjoying a Torrential Rain

Enamel Inner Tank + Magnesium Rod
Durable and Hygienic