... ; OEM from China; Certification:ISO14001 ISO9001 SGS Specifications Small compression spring Process Capablilities Standard ISO, GB, DIN, JIS, ANSI ... s requiresCoating/Surface treatment Zinc,Tin,Sn/Pb,Nickel,Chrome,Titanium, Cadmium, Dacromet,Heat dip zinc, Chromate , Electro ... mainly produces forged fastener precise screws, which are made of titanium, copper, aluminum, iron, stainless steel and so on ...