... produced according to customer's design and requirementsMaterial: Carbon steel, Stainless steel , Brass, AluminumFinishing: Black, white and yellow zinc, ... standard: ISO 9001:2008Established in 2004Work flow:High Quality Steel Spring Product profileScrews sort: Machine screws, Self tapping screws, ... Wing nuts, Hex nuts etcWasher sort: Plain washer, Spring washer,Star washer,Tooth washer etc.CNC parts