this is green pressurized solar water heater. 1ISO, EN12975,CE. 2lifetime >15years, guarontee3years. 3brank Jinyi, and ... 12975 etc. 1)this products no disorder water tank on your roof.the compact pressurized solar water heater system can endure the Max pressure up ... to 0.6MPa, as the system is pressurized, so it ...