Bolt, Nut, CNC Machining Parts manufacturer / supplier in China, offering Copper Nut Customized Nut Surface Is Passivating Rolled Nut for Hardware Fixed/Machine, DIN/ANSI/BS/JIS Customized Copper Nut Corrosion Resistance for Mechacial Engineering/Machine/Furniture, Copper Nut High Precision Nut Corrosion Resistance Customized Conductive Rolled Copper Nuts and so on.