... water heater: 1.SRCC,Keymark,CSA,UL,SABS,CE,ISO approved 2.High pressurized 3.OEM retail ... channeladopts copper steel, each one can endure 1.0Pavacuum tube: 3 target AL/SS/CU with heat pipe, ... Diameter of inner/outer water tank(mm)Heat pipe vacuum tubeqty (pcs)size (mm)HK-SPS-Z150-H15370 ... freeDelivery Term:FOB prefered,CFR and CIF acceptableCertificatesCCC,CE,ISO,Keymark,SRCC,CSA,SABS and so onContact ...