... water heater system 1. Solar Keymark,SGS,CE, CCC, ISO9001 2. high quality&competitive product 3. 10 years experience solar water heater ... 2) Temperature preservation is equipped with standard electric water heater setting, automatic temperature control exchanger, and increased anode ... Steel tube dimensions: 58mm x 1.8m6) Water capacity: 150L, 200L, 300L,500L7) Pressure: 6 bar solar water heater system