... ISO9001,SGS,CCC OEM is OK Non-pressurized solar water heater,compactSimple structure and working principleCost-optimalCE,ISO9001,SGS,CCCOEM Material ... Polyurethane,50mm(JNYL),50-60mm(JNQG)Optional spare parts:Electric heater,magnesium rod,assistant tank,reflectorPacking:Export carton with full foamsRemark ... 47*1500);150/180/200/240/300/360L(58*1800) New Compact non-pressured solar water heater for 2013