Company Description
Chengdu History Petroleum Technology Co. are Chengdu Honest Diamond Bit Co., Ltd. Our headquarter is Chengdu History  Petroleum Technology Co., Ltd(CDHP) specializes in R&D, production and technical  support for various PDC Drill bits,  Tricone Drill bits, Diamond Drill bits and supply drill pipes also well drilling tools. Our products are used for well drilling,  gas well drilling, water well drilling, mining, etc.