... EU relative regulation.Model difference: HM DW-III series, three effects;HM DW-IV series, four effects, save about ... series, save about 77% water than HM DW-V series; HM DW-VII series, seven effects, save about 15% ... energy than HM DW-VI series, save 100% water than HM DW-VI series; HM DW-VIII series, eight effects ... , save about 10% energy than HM DW-VII series.Model: HM DW-(III/IV)100/(III/IV)200/(III/ ...