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★Hanzhong city gas companies |
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★Jiuquan city gas companies |
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★Puyang, Henan Province's high-tech industrial development zones -- Water Electric Corporation |
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★Henan Zhongyuan Gas Development Company |
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★Luoyang in the new Olympic China Oil Gas Ltd.
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★Beijing Institute of Science and Technology innovation and energy saving |
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★Fushun Gas Company |
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★Datong broad economic LNG company |
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★Mianchi County Gas Company |
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