1.20years experiences. 2.TS16949 system 3.advanced eqquipment 4.skilled and qualified staff 5.hex flange screw material:stainless steel,carbon steel,brass,copper,aluminium,etc.machining process:turning,drilling,milling,plate.surface:zinc plate,chrome plate.QC:ISO9001 TS 16949service :OEM hex flange screw