... Socket, Torx, Rice character type, One Way etc.MaterialCarbon steel, stainless steel, SS-304, SS-302, Aluminum, Brass, Bronze, ... EquipmentProjecting apparatus, Salt Spray Test, Durometer, and Coating Thickness Tester.WorkforceA group of experienced production technician, sophisticated ... our website: http://gdsx.en.alibaba.com all kinds of screw ,machine screw ,stainless steel screw and fasteners