... 2.Zinc,Nickel or Chromate,plating,anodize types of springs/types of extension springs/drum type spring We provide ... order acceptable.Machining equipmentCNC machining center,CNC lathes,milling,CNC millingDrilling machine,internal grinder,cylindrical grinder,etc ... Punch Press Machine6sets-Hydraulic Machine(120tons)10sets-General Milling machine13sets-Wire-cut Machine120sets-Grinding Machine10sets-Hand ...