Cangzhou Great Drill Co.,Ltd. specializes in designing, manufacturing, marketing and serving the high performance Drilling bits and drilling tools used in petroleum industry. The company is established by the top experts of the field, and equipped with advanced equipments and facilities.
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Our diamond bits named Great, which sizes ranging from 3〞to 17-1/2〞.All the products are made in accordance with the API spec7-1, meanwhile our quality assurance system and our environment management system have been respectively awarded the ISO9001 certificate and ISO14001       certificate. Furthermore, the experienced and knowledgeable service team will ensure the superior performance of our products in both the domestic and international markets.