Heat Pipe Solar Collector 1.CE, Solar Keymark, ISO 2.High Pressure Solar Collector 3.10 Year's Experience 4.OEM Available Heat Pipe Solar Collector How heat pipe solar collector works: 1) Solar absorption: Solar ... 40°CHot Temp Resistence260°CLife15 YearsCertificate:CE, Solar Keymark, EN12975, CCC, ISO9001:2000Appliance:Domestic Hot Water Heating, Pool Heating,Radiant Infloor Heating, Air Heating.