XieRui Super Hard Materials (Long Yan ) co., LTD is a professional manufacturer of tungsten carbide . Our Company holes on the tenet of " produce excellent product , create first-class brand " and engaged in developing cemented carbide , we have products such as tungsten carbide rods , carbide inserts for mining and oil-field rock bits , rotary slitting cutters , flat rod insderts , etc. we are striving for a varirty of products of top grade and developing new types , meanwhile. we could make products according to your requirement