3U Super Hard Products Co. We are a manufacture of old-stone(at)livecn Diamond bruting wheel/ Polycrystalline diamond(PCD)/Thermal Stable Polycrystalline diamond(TSP),PDC (Polycrystalline Diamond Compact),CBN grinding wheel.
Especially TSP(thermal stable polycrystalline diamond) old-stone(at)livecn TSP is the ideal material for petroleum and geological drilling bits,Those drill bits can be of soft, medium and hard stratum. Can be normally used for oil drilling. (Unit:mm)
e-mail/msn: old-stone(at)livecn
contact: shonali