Beijing Drilling Tools Factory is one of the leading manufacturers of synthetic diamond and diamond tools in China. The factory is certificated by ISO 9001-2008 quality system and the products are sold not only domestic also worldwide. The products of factory, with “DISCOVER” as their trademark, mainly include synthetic polycrystalline diamond (PCD & TSP), diamond mining bits and reaming shells, diamond core drills for civil engineering, diamond saw blades, diamond wheels ...