Hejian City Feilong Retop Rock Bit Manufacture Co.,Ltd specializes in the designing, manufacturing, marketing and serving high performance diamond bits, tricone bits drilling tools which used petroleum industry. takes fastest penetration best as bit ...

Tianjin Universal-Link Enterprise Ltd (TULE) was incorporated in Port Free Trade Zone on July 7, 2004. Its registered capital is 50 million Yuan. As a core enterprise of trade format CTIETCC, it specializes the international and related business. scale ...

Chen peng drilling equipment co., LTD is mainly engaged in roller bit, diamond bit and drill design, production, sales technical services of professional companies, products include Aaron tricone PDC core drag pipe, stand, slip rings, crabs, hook, safety, ...