... : anti-rust oil coating ,powder,etc.Equipment: milling machine,hobbing machine,drilling &CNC milling machine (XK8140:resolution of 0.001mm,positioning accuracy of 0 ... milling, turning, grinding, planing, drilling, threading and hobbing. Equipment: Milling machine, hobbing machine, drilling & CNC milling machine (XK8140: resolution of 0.001 mm; positioning accuracy ...