The company operates several of CNC drilling and milling machining centers,Taiwan bimetal casting furnace,German plasma automatic screw welding machine,Taiwan CNC screw grinding machine,CNC screw milling machine,CNC vertical grinding Machine,CNC screw milling,CNC vertical machining center,High precision turning center,well-type quenching and tempering furnace,well-type nitriding furnace,vacuum quenching furnace, plasma nitriding furnace and leading screw barrel machining equipments at home and abroad,also with perfect testing facilities.https://www.jzjxc.cn/product/nitride-screw-barrel.html