... China; Certification:ISO14001 ISO9001 SGS Specifications Hexagon nutProcess Capablilities Standard ISO, GB, DIN, JIS, ANSI, BSW, ASME ... Grade 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10. ... Coating/Surface treatment Zinc,Tin,Sn/Pb,Nickel,Chrome,Titanium, Cadmium, Dacromet,Heat dip zinc, Chromate , Electro ... good performance in screw industry and develops well with the support of all customers. We have ...