... XXH, T2.5, T5, T10, T20, 3M, 5M, 8M. Surface treatment: High frequency, black of oxidation, zincing, nickelage, anode. Machine ... : CNC engine lathe, milling machine, drilling machine, gear shaper, hobbing ... that best quality product goes out in the market. Competitive price & prime quality & best service & timely shipment. 1) guarantee ...