... above. Process technologyCasting, Machining, Metalworking, Sheet Metal Bending, Surface Treatment, Heat Treatment, Griding, Milling, wire EDM, Linear ... We can provide samples(one piece)before substantial orders. Surface treatmentBlacking, Polishing, Anodize, Chrome plating, Zinc plating,Nickel ... precision manufacture for more than 7 years.1.Quality control:The defective products rate is 0.1%. Imported ...