... circuit. 2.Have CE,SGS certificate 3.Best heating efficient 4.Constant power output 1. Complete ... saves 20% energy.4. Low cost of making induction coils, wide-matching performance,various function of technological planning, ... the function of manual, semi=auto,full-auto, heating-keeping-cooling device period to control.2) perfect ... more safety. Alibaba official suggest IGBT induction heating machine