Zhuzhou Dongya tools Co, Ltd is a professional manufacturer of tungsten carbide products in China, products include carbide inserts, mining inserts, indexable inserts shims, drilling bits, drawing dies, cold forging dies, carbide bars, carbide rods, carbide balls, wear parts, tungsten carbide cutting cutters etc. We have rich production experience and advanced production process to make any size possible according to your request. Different grades are available too, such as K01, K05, K10, K15 K20, K30, P20, P40, etc.