1.Adopt IGBT series resonance circuit; 2.saving energy,electricity. 3.easy to operate,soft switch 4.heat speed fast functions: 1).Perfect function of protect itself,such as over-voltage,over current,lack of water,phase fail,over hot,etc. 2).Digital auto-control,it has the function of manual,automatic and heating-keeping-cooling divide period to control. 3).Auto tracking frequency ,the power can ...