Shanghai Country Enterprise Co., Ltd. Product List Self Tapping Screws Hex Washer Head DIN6928 Cutting with Rubber Washer Chipboard Screws DIN7505 Self Drilling Screws Hex Washer Head with Rubber Washer DIN7504k DIN965 Machine Screw Cks Head Self Drilling Screws Wafer Head (Truss Head) Self Drilling Screws Drywall Screws Bugle Head Self Tapping Screws Wafer Head (Truss Head) Self Tapping Screws Pan Colloar Head DIN968 Drywall Screws Bugle Head Corse/Fine Thread Self Tapping Screws Flat Head DIN7982