solar water heater 1)Price EXW 2) ISO9001,CE; 3)Flexible configuration; 4)Durable and high-dense welding; Tengen high qality pressured solar water heaterInner tank: ... borosilicate glass (47/58mm) The vacuum tube of our solar water heater has the high absorption rate and low emission rate, the ... is ranging from 50 to 95 Type: 16, 18, 20, 24, 26, 28 , 30and36 tubes Capacity: 130 to 300L Characteristics ...