... 1.CE certificicate 2.Wilo pump 3.220V,50HZ /110V ,60HZ both ok 4.8L expansion vessel Solar water heaterProduct ModelXK-SPVacuum ... ,100L,150K,200L,250L,300L,400L,500L. 40L/person for Max consumptionCopper coil in the tankWith dia of 12mm and ... in winter)Sample regulationBuyer should pay for product cost and sea freightGuarantyWater tank for 3 years, tube and frame for 5 yearsMOQ1 set Solar Pump Station