T Bolt
Dec 11, 2009
1. Surface Treatment: Nuture, Black, Pot Gaanizing, Colaanizing, Oil, Parkerising And So On.
2. Grade: 4.6, 5.6, 8.8, 12.9. We Own Advanced Equipments For Producing And Testing To Guaratee The Qulity Of Products.
Zhongbo Railway Fastening Co. Ltd