... capacity 1000,000sets solar water heater Manufacture since 1987SRCC,Solarkeymark approvaltesting 100% in houseAnnual capacity 1000,000setssolar hot waterSolar water heater,solar hot water,solar water heating,solar heatingModel: SL ... over 25C &thickness:40mm~50mm4). No.of Copper coils: double coils or single one (copper pipe: OD:12mm,thickness:1.0mm;)5).Workstations ...