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Carbon steel disc spring 1.our campany has fifferent type accoding to the customers' requirements. 2.we can produce thedisc spring according to the drawing or samples provided by the customers,other product we also can do. 3.we cooperation wiith many large companies,the universal company...the products' qualities have passed e test. 4.material:65Mn, stainless steel, spring steel, brass, aluminum... 5.standards:din2093, din6976 6.surface tratement:oiled to prevent tust, zinc/nickel/chrome plating, black... If you find our products interesting please contact us,we will give you our best price!