... 2.Size:M6-M8 3.Material:65# manganese steel or carbon steel 4.Finish:Yellow/White We can design and fabricate ... machines, more than 100 sets in total;2) Material: iron, carbon steel, stainless steel, brass, copper, alloy steel, aluminum, cold ... Tin, Ag); Painting, Powder, Anodizing, E-coating, Silkscreen, Heat treatment, Black oxid; 4) Standard/ specification: OEM service as per customers' requests ...