We specialized in chipboard screw, wood screw and dry wall screw with the capability of more than 5000 tons per year.Standard covers: GB, JS, DIN, ISO,BS. Our company has the advanced equipment and abundant design ability. The material of above product is low carbon steel. Chipboard screw Head Styles: 1) Flat/Countersunk 2) Oval/Countersunk Raised 3) Pan Drive Styles: 1) Pozi 2) Torx 3) Philips zinc plated waxed, ribbs 2. 5 x 10- 6. 0 X 160 Dry wall screw: phillips bugle head phosphate or zinc, flat head 3. 5 X 16- 4. 8 X 130 Wood screw: double countersunk pozi twinthread zinc 4 x 1/2- 12 x 4. Should any of the product be of interest to you.we shall be glad to give you our lowest quotation upon receipt of your detailed requirements. I am looking forward to your early reply. Best regards emma wang