Changbei project is a joint venture project for natural gas development between PetroChina and Shell.

长北气田是中国石油与壳牌公司合作的天然气开发项目。

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Changbei project is a joint venture project for natural gas development between PetroChina and Shell.

长北气田是中国石油与壳牌公司合作的天然气开发项目。

youdao