solar water heater 1)the original equipment; 2)non-pressurized; 3)ISO9001,3C,CE,CNAL; 4) easy to control ,nice and home WHY CHOOSE USPrimary competitive advantages: 1) CE, CCC, ISO9001: 2000, CNAL2) Good price and quality 3) Prompt delivery 4) Environmental Protection 5) OEM order is accepted 6) experience of export to 49 countries7) International quality warranty: 5 years for whole system and 15 ...