Hejian Huanyu Petroleum Machinery Co., Ltd.

http://indomonster.com/huanyubits

Hejian Huanyu Petroleum Machinery Co., Ltd. in China.
1) Product : we specializes in manufacturing: Tricone bits, steel tooth bit, milled tooth tricone bit, tungsten carbide insert rock bit, tri-cone drill bit , 3 cone bits, rotary bit, TCI tricone bit, PDC drill bit , diamond core bit, bicenter bit, single cone bit , reamer bit, down hole opener, hole enlarger, drag bit, button bit and drilling equipment for petroleum& gas , water well , mining and tectonic industries  £  ¬ oil field, construction, geothermal, directional boring, and underground foundation work all over the world.
2) API and ISO certificate
3) Website : to learn more on our website http: / / www.huanyubits.com/

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