... ,SGS,country patents 1>Double frequency induction heating machine XS-80 technique data:1. type:XS-180-120B2. input voltage:three phase ... . 8.Digital auto-control, it has the function of manual, automatic and heating-keeping-cooling divide period to control. 9.Auto ... maximum.4)Special cycle cooling system, make sure the machine work continuously.5)machine small volume, light weight, easy to remove,it ...