Addith screw category mainly includes furniture screws, wood screws, Chipboard screws, etc. Our screw are made of premium steel and using galvanized surface treatment, not easy to rust, corrosion-resistant and durable. The use of high-quality metal material, fine workmanship after quenching treatment, greater hardness, higher strength. The thread is deeper, the distance between the gap is even to made the force is even, the locking is more secure, not easy to fall off when using it.