7 years factory high efficient steam generating machine 1.26 years experienced technician 2.over-heat protection 3. ... automatic 7 years factory high efficient steam generating machine Power: 4KW,6KW,7.5KW,9KW,10.5KW,12KW,18KWFunctions ... galum board, stailess steel tank, copper inlet and outlet, copper handle with zinc 4 - 18kW power options, in-shower thermostatic control ...