Question 1

Key Features

Accepted Answer

Advanced technology and proven performance for demanding applications

Question 2

Applications

Accepted Answer

Ideal for medium-temperature solar solutions across diverse industries and residential sectors:

Question 3

Technical Specifications

Accepted Answer

Detailed technical parameters and component specifications

Question 4

Design & Reliability

Optimized bracket design tested for 14-level wind loads (42–45 m/s).

Internal flow channels and high-pressure interfaces standardized for 16 Bar test pressure.

Engineered for safe, long-term operation and simplified maintenance.

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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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.project-featured::before {
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    position: absolute;
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.project-featured:hover {
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.project-featured:hover::before {
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.featured-image {
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.featured-image img {
    width: 100%;
    height: 100%;
    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;
    right: 20px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    padding: 6px 16px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
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}

.featured-content {
    padding: 28px;
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.featured-content h3 {
    font-size: 24px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 16px;
    line-height: 1.3;
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.meta-tags {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
    padding-bottom: 16px;
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.meta-tags span {
    font-size: 12px;
    font-weight: 600;
    color: #64748b;
    padding: 4px 12px;
    background: linear-gradient(135deg, #e0f2fe, #bae6fd);
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.featured-content p {
    font-size: 15px;
    line-height: 1.7;
    color: #64748b;
    margin-bottom: 20px;
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.achievements-list {
    display: flex;
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    gap: 8px;
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.achievement {
    font-size: 13px;
    color: #1e293b;
    padding: 10px 14px;
    background: linear-gradient(135deg, #e0f2fe, #bae6fd);
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    border-radius: 4px;
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.btn-primary, .btn-secondary {
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    border-radius: 8px;
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    overflow: hidden;
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.btn-primary {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
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.btn-primary:hover {
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.btn-small svg {
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.project-card {
    background: white;
    border-radius: 12px;
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.card-content {
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.card-content h4 {
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    line-height: 1.6;
    color: #64748b;
    margin-bottom: 16px;
    flex: 1;
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/* Card Actions */
.card-actions {
    display: flex;
    gap: 8px;
    margin-top: auto;
}

.card-actions .btn-primary,
.card-actions .btn-secondary {
    flex: 1;
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    .container {
        padding: 0 30px;
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    .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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@media (max-width: 1024px) {
    .projects-layout {
        grid-template-columns: 1fr;
        gap: 32px;
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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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    .projects-showcase {
        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;
    }
    
    .featured-image {
        height: 240px;
    }
    
    .featured-content {
        padding: 24px;
    }
    
    .featured-content h3 {
        font-size: 21px;
    }
    
    .card-content h4 {
        font-size: 16px;
    }
    
    .featured-actions {
        flex-direction: column;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .card-actions {
        flex-direction: column;
    }
}

@media (max-width: 640px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .card-image {
        height: 200px;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 28px;
    }
    
    .featured-image {
        height: 220px;
    }
    
    .featured-content h3 {
        font-size: 19px;
    }
}

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

.certifications-section::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, #e2e8f0 50%, transparent);
    }

.certifications-container {
      max-width: 1400px;
      margin: 0 auto;
      padding: 0 40px;
    }

/* Section Header */
    .certifications-header {
      text-align: center;
      margin-bottom: 60px;
    }

.certifications-label {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 2px;
      color: #3b82f6;
      margin-bottom: 15px;
      padding: 8px 20px;
      background: rgba(59, 130, 246, 0.1);
      border-radius: 25px;
      border: 1px solid rgba(59, 130, 246, 0.2);
    }

.certifications-title {
      font-size: 44px;
      font-weight: 800;
      color: #1e293b;
      margin: 0 0 20px 0;
      line-height: 1.2;
    }

.certifications-title .highlight {
      background: linear-gradient(135deg, #3b82f6, #2563eb);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

.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;
    }

@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 5

Solar Keymark Certification

Accepted Answer

European Quality Standard

Question 6

ISO 9001 Quality Management

Accepted Answer

International Organization for Standardization

Question 7

ISO 14001 Environmental Management

Accepted Answer

International Organization for Standardization

Question 8

ISO 45001 Occupational Health & Safety

Accepted Answer

International Organization for Standardization

Question 9

Air Solar Collector

Accepted Answer

Product Certification

Question 10

Flat Plate Solar Collector

Accepted Answer

Product Certification

Question 11

PVT Solar System

Accepted Answer

Product Certification

Question 12

Solar Keymark Certification

Accepted Answer

European Quality Standard

Question 13

Solar Water Heater

Accepted Answer

Product Certification

Question 14

Vacuum Tube Solar Collector

Accepted Answer

Product Certification

Question 15

ISO 9001 Quality Management

Accepted Answer

International Organization for Standardization

Question 16

ISO 14001 Environmental Management

Accepted Answer

International Organization for Standardization

Question 17

ISO 45001 Occupational Health & Safety

Accepted Answer

International Organization for Standardization

Question 18

Solar Keymark Certification

Accepted Answer

European Quality Standard

Question 19

Solar Keymark Certification

Accepted Answer

European Quality Standard

Question 20

Air Solar Collector

Accepted Answer

Product Certification

Question 21

Flat Plate Solar Collector

Accepted Answer

Product Certification

Question 22

PVT Solar System

Accepted Answer

Product Certification

Question 23

Solar Water Heater

Accepted Answer

Product Certification

Question 24

Vacuum Tube Solar Collector

Accepted Answer

Product Certification

Question 25

Solar Integration

Accepted Answer

Advanced flat-plate collector technology maximizing energy efficiency

Question 26

117+ Patents

Accepted Answer

Cutting-edge innovation portfolio protecting proprietary technologies

Question 27

Research Partners

Accepted Answer

Strategic collaboration with leading institutions worldwide

Компонент	Технические характеристики	Параметр
Абсорбер	Покрытие	Голубой Титан
	Конструкция	Трубчатый лист
	Поглощение	95% ±2%@AM1.5
	Эмиссия	5% ±2%@80°C
Коллекторная труба	Материал и размер	Медь φ42×1.5 мм
Рама	Размер	5960×2520×166 мм
	Материал	Высококачественный алюминий 6063-T5
	Поверхность	Молочный белый
Покрывающая пластина	Материал	Тонированное закаленное стекло с низким содержанием железа и супер-белое
Покрывающая пластина	Пропускание света	≥91.5%
Низ	Материал	Гальванизированный лист толщиной 0,4 мм
Теплоизоляция	Низ	Стекловата 80 мм
Теплоизоляция	Боковая сторона	Картонное волокно 30 мм
Соединитель	Размер и количество	DN40, 2 шт.

Высокоэффективные солнечные панели Тепловые коллекторы

Масштабная солнечная энергетика Тепловой коллектор

Ключевые особенности

Покрытие BLUE CORE™ PVD

Двойное стекло AR

Точное лазерное сваривание

Беспроводной соединитель HTC

Готовность к экстремальным условиям

Доказанная репутация

Применения

Технические характеристики

Дизайн и надежность

Глобально Совершенство солнечной энергетики

Централизованный солнечный нагрев для города Сага в городе Шигатсе

Проект теплового насоса Tianjin School TPV Pro+

Система горячего водоснабжения для отеля Саммита АТЭС

Проект горячего водоснабжения для вилл курорта во Флориде

Проект горячего водоснабжения церкви Харц

Глобальные сертификаты и Гарантия качества

Сертификат испытательного отчета

Сертификация Solar Keymark

ISO 9001 Управление качеством

ISO 14001 Экологический менеджмент

ISO 45001 Охрана труда и безопасность

Воздушный солнечный коллектор

Плоский солнечный коллектор

Солнечная система PVT

Сертификация Solar Keymark

Солнечный водонагреватель

Вакуумный трубчатый солнечный коллектор

ISO 9001 Управление качеством

ISO 14001 Экологический менеджмент

ISO 45001 Охрана труда и безопасность

Сертификация Solar Keymark

Сертификация Solar Keymark

Воздушный солнечный коллектор

Плоский солнечный коллектор

Солнечная система PVT

Солнечный водонагреватель

Вакуумный трубчатый солнечный коллектор

Ведущие будущее Чистой энергии

Наши основные преимущества

Интеграция солнечной энергии

117+ патентов

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Тепловые коллекторы

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Тепловой коллектор