Hua An Industries Co., Ltd. has been engaging in fastener field for more than 15 years. Our products include threaded rod, concrete screw, chipboard screw, drywall screw, wood screw, self tapping screw, self drilling screw, hex nut, flat washer, spring washer, concrete nail, roofing nail and wire common nail. Our products are of high quality and competitive price and are quite popular in the United States, Europe, South Africa, South America and the Middle East.