... manufacture of tungsten carbide products such as tungsten carbide strips, rods,rings,inserts, shims,wear parts, drawing dies,drilling bits,cold forging ... requirements and our annual output is around 500 tons .The carbide powders are WC, TiC, Cr3C2, VC, TaC, NbC ... tungsten carbide products. We can provide any sizes and high quality products you need. K20 K30 long life tungsten carbide drill bits ...