... manufacturer of tungsten carbide products such as indexable inserts shims, drilling bits, drawing dies, cold forging dies, carbide bars, carbide rods, carbide balls, carbide burrs, etc ... as Hole Openers, Hammers & Hammer Bits, Drag Bits, rock drilling, etc.We can produce the tools according to customers' requirement. Welcome your contact. tungsten carbide rock and coal mining and drilling bits