... PlugInstallation: FreestandingHousing Material: Stainless SteelCertification: CE, ISO ,SGS ,solar keymarkCapacity: 300Place of Origin: Jiangsu China (Mainland)Brand Name: ... pressuriedPackaging & DeliverySpecificationssolar water heater (1)CE,ISO,SGS ,solar keymark (2)Low pressure,stangard SABS (3)High Quanlity ... optional, from 24 tubes to 36 tubes. solar water heater(SRCC,SOLAR KEY MARK,CE,ISO9001,CCC)