... ,SRCC,CE,ISO,CCC certificated Solar water tank1,capacity: 100L/150L/200L/250L/300L/400L/500L/600L2, Inner water tank:sus304-2B stainless steel ... thickness3, Outer water tank:color plate 0.31-0.4mm thickness4, Using single or double copper coil for heater transfer5, Electrical water heater tank quality6, For ...