Flat solar energy water heater 1. OEM &ODM 2. 5 years warranty 3. CE,SGS,SRCC,Solar Keymark,ISO9001:2008 Flat solar energy water heater Features1. It is suitbale for ... install and handsome appearance6. Resist freeze7. Safe and steadyFlat plate Solar water heater materialOuter tank material0.4mm thick Powder coated Colour steelInner tank ...