... working principle Cost-optimal CE,ISO9001,SGS,CCC OEM Compact/non-pressurized solar water heater,200LSimple structure and working principleCost-optimalCE, ... assistant tank,reflectorPacking:Export carton with full foamsRemark:Diameter of solar water tank(mm):360/460Vent connection(inch):1/2Water ... *1500);150/180/200/240/300/360L(58*1800) Compact /non-pressurized solar water heater 200L/manufacturer