Dongguan Hengzheng Machinery Co., Ltd. specializes in designing and customizing injection molding machines, extruder screws, screw heads, stop rings, mesons, material pipes, flanges, nozzles and other accessories. We provide efficient fully ground screws, alloy screws, fully hardened screws, high-speed steel screws, optical screws, halogen-free screws and other accessories tailored to the special characteristics of our customers' products, enabling them to stand undefeated in the fierce market competition. Hengzheng screws are the best choice for injection molding production in industries such as office, electronics, automotive parts, household appliances, industrial gears, etc.