Solar water heater frame 1.EN12975 solar keymark 2.Anti-freezen & pressurized 3.10 years warranty Solar water heater frame Material of Model:1.the heater pipe is made ... good effect of temperature preservation Model: tank capacity: 150L,200L,250L,300L,400L,500L,600L,700L,800L............solar water collector1) Reliable, efficient, twin-glass ...