XinXiang ChangLing Metal Products Co.,Ltd is a professional manufacturer in designation, development and production of Screw thread Inserts and tools, such as threading inserts ;Thread Repair Kit; Self tapping Insert;Keensert ,tools of Inserts ,Etc .We passed ISO9001:2008 Since 2003 and keep improving the quality everyday. We have been always trying our best to provide our customers with high quality, the best price and satisfactory services. ChangLing (CLCOIL )has been already recognized as one of three largest threading insert companies,located in XinXiang City which is the strong industrial city in the middle of China. Our company has advanced CNC grinding machines such as large-sized projectors, electronic microscope, etc. Our company is dedicated to R&D of threading inserts, selt tapping insert,keensert(keysert ) And Machine Parts since establishment. And we aim at developing mid-market and high-end markets products in the world, via choosing foreign high-quality materials and the worlds advanced edge control techniques. Our products are recognized by all customers after being putted into the market.CLCOIL is committed to become the first-class brand of Screw Insert in the world with concept of honesty & spirit of creation. Our slogan is "quality determines the brand of CLCOIL; credibility continues our cooperation".