CIPPE, World’s Largest P...
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The13th China International PetroleumPet...more Kerui Group Colombian nitrogen application la...
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Prominent nitrogen applications and various nitrogen injection technology in order to expand the ba...more
　　The company concentrates on the development of the international market, making effort to……
more 　The work site for the Land Electric Driven Drill Rig ZJ50/3150D 1500HPexported to Saudi Arabia's .……
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