Shenzhen Hanwei Gangtai JewelryMachine Co., Ltd, was founded in 1992.we are the specialized manufacturer of jewelry machines and equipments from fumace entry to finished goods , also manufacturing various kinds of 316L stainless steel chain , 925 silver chain , semi-finished and finished are available.base on the excellent techique, nice fashion styles and high qualtiy , our machines and chains are sold well all over the world. Our R&D department are studying advance technology to keep our product on top range .our GTZL-300 Plasma Automatic Welding & Making Machine , High-speed chain making machine series are gained a series of Technology Patet Certificates in Succession. "To be the world name brand , to be the to-ranking corparation " is the goal of our company.