... 200J 4)OEM 5)ISO 9001:2000 spare parts of drilling machineIntroduction of PDC PDC is made of diamond micro-powder ... be embedded into mine drill that used in shallow stratum drilling, which is economic and durable. Advantages1. high hardness, abrasion ... widely used in the fields of geological exploration, coal mining, water conservancy and hydropower, construction of road and railway. Any questions ...