8 Huawei Helps Qinghai Oilfield Develop an Optimal OTN Background Qinghai Oilfield is located in the northwest corner of Qinghai Province. It is one of China's key areas for onshore oil and gas exploration. Presently, Qinghai Oilfield provides oil and gas resources for multiple major cities, including Xining, Lanzhou, Yinchuan, and Beijing, using six gas pipelines and one oil pipeline. China National Petroleum Corporation (CNPC, Qinghai

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