... above. Process technologyCasting, Machining, Metalworking, Sheet Metal Bending, Surface Treatment, Heat Treatment, Griding, Milling, wire EDM, ... can provide samples(one piece)before substantial orders.Surface treatmentBlacking, Polishing, Anodize, Chrome plating, Zinc plating ... cage, the bottom, the split ring and related accessories, with steel, aluminum and stainless steel as materials. Our products ...