58*1800 Solar Vacuum Tube Blue Black Coating High Absorber Solar Thermal Glass Tube Collectors

58*1800 Solar Vacuum Tube Blue Black Coating High Absorber Solar Thermal Glass Tube Collectors. 5-Year Warranty Coverage: Comprehensive warranty protection for 5 years on the solar water heater system. High Efficiency Evacuated Tubes: Superior heat collection efficiency compared to flat plate solar water heaters. Food Grade Stainless Steel Tank: Inner tank made of imported SUS304-2B stainless steel meeting health standards. 72-Hour Heat Preservation: One-off molding polyurethane foam insulation ensures heat retention for 72 hours. Flexible Installation Options: Easy plug-in installation suitable for both flat and inclined roof surfaces. Automatic Operation System: Fully automatic operation when connected with intelligent controllers and auxiliary tanks. Built-in Electric Backup Heater: Integrated electric heater provides backup power for daily hot water supply. Wide Global Application: Suitable for household use in Europe, Americas, Asia, Africa, and the Middle East.