Cov chaw nres tsheb nyob hauv Zheng Niaengiabao, Yanchi County, nroog Wuzhong, Ningexia hui Autonomous cheeb tsam. Nws yog thawj zaug sib xyaw ua ke petrol thiab gastrefueling chaw nres tsheb tsim los ntawm Petrochina hauv Ningxia.