... Chinese manufacturer of tungsten carbide products such as carbide no standard products, inserts, mining inserts, indexable inserts shims, drilling bits, drawing ... dies, cold forging dies, carbide bars, carbide rods, carbide balls, carbide burrs, wear parts, tungsten carbide cutting cutters ... K15, K20,K30, P20, P40,etc. cemented carbide for rock drilling tools ( SGS approved )