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.