Beijing Lanlong Diamond Factory (Beijing Mentougou Chengzi Diamond Factory) was established in the early 1980s, located in Mentougou District of Beijing. We specializes in manufacturing synthetic industrial diamonds, diamond tools and other raw materials, and it offers perfect after-sale services.

Beijing Lanlong Diamond Factory has about 100 staffs, the annual output of high-quality diamond has reached 100 million carats and the products has been exported to USA, Europe, Southeast Asia and many other areas. Lanlong diamond tools can be used for sawing, cutting and polishing of marble, granite, slate, sandstone and limestone and other super hard, hard and soft materials. Moreover, our self-developed test equipment -- the TI Tester, which based on FEPA standard, can test Thermal Index for various sizes of diamonds and CBN.

Recently, Beijing Lanlong Diamond Factory (Beijing Mentougou Chengzi Diamond Factory) has been assessed and registered by National Quality Assurance limited against the provisions of ISO 9001:2000, and a certificate has been given to this effect.