... power supply 2.100% duty cycle design 3.Quick heating Henan soldering machine for sale Company Brief Introdution:ZhengZhou GuoYun Electronics ... ,quenching machine tool and special complete quenching machine.used for forging,rolling,brazing,hardening,annealing,hardening and tempering and ... than 3,000 sets per yearAdvantages1,small and simple design ,it is easy to take along2,compared with other ...