... supply 2.100% duty cycle design 3.Quick heating Henan soldering machine for sale Company Brief Introdution:ZhengZhou GuoYun Electronics Thchnology ... quenching machine tool and special complete quenching machine.used for forging,rolling,brazing,hardening,annealing,hardening and tempering ... simple design ,it is easy to take along2,compared with other forms of heating ,this machine can significantly ...