... 2)key part of solar water heaters,solar collector 3)well-structured,reasonable designed High efficiency solar swimming pool heaters Features:1. Special ... solar yields. The working temperature from -33 to 120.4.Can be used in projects,such school, factory, swimming pool ... GB/T6424, EN12975, EN12976Certification Body CE, CCC,ISO9001 (China)Collector PanelsMaterial0.25mm Aluminum, Copper TP2 Φ10, thickness ...