We specialize in custom precision machinery parts. 1.Certification:ISO9001 2. Drawings Accepted 3. Quick ... ,We are specialize in produce all kinds of precision machinery parts(nuts,bolts,fasteners,washers,pipe fitting,washers,etc),our ... Surface treatment heat treatment, sand blasting,polishing,electro-plating,chemical plating,painting6 Equipment melting furnance,casting machines,drill machine,laser ...