1.ISO system certification. 2.Material:Stainless steel,Carbon steel. 3.OEM/ODM orders are welcome. the high-quality screw Products pictures : Specifications1.Chipboard Screw:material:C1022A 2.Hardened 3.Quality:make all sizes 4.Finishment:all kinds of finishment 5.Size:Different Head Type Countersunk,pan ,raised oval Thread Type Single Thread Drive Pozi,Square,Pozi+Slotted Diameter M3.0/M3.5/M4.0 ...