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The Houston oil exhibition OTC in the United States

The annual American Houston oil exhibition OTC was organized by the American Petroleum Engineering and Technology Association (SPE) in 1969,

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© 2018 Shaanxi Huawei Technologies Co., Ltd.All rights reserved in the ICP for 05036789  technical support: Jieshang Enterprise Business Platform​      

© 2018 Shaanxi Huawei Technologies Co., Ltd.

technical support: Jieshang Enterprise Business Platform      

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