... plating Employee:200 Certificate:ISO9001:2008, ISO14001:2004 Special Drive Cheese Head Self tapping screws A.tapping screws keypoints: 1.Standard ... steel),SUS316,copper and etc.. 5.Surface Finish plain finish, white zinc, black zinc, colour zinc, black oxide, nickel plating6.Normal ... tax Number: 44190066815777X Equipments:300 sets Product display: Special Drive Cheese Head Self tapping screws