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在黑龙江大庆市，公用电信现有30万门交换机，交换局所71处；石油专网是大庆石油管理局组建的专用通信网，目前共有交换机30万门，55个交换局所。公用电信和石油通信的通信网络规模都比较大，双方的市场占有份额也基本相同，各具竞争优势，且竞争异常激烈，产生了严重的负面影
In Daqing City, Heilongjiang, there are currently 300,000 switches and 71 exchange offices in the public telecommunications network. The oil network is a special communications network set up by the Daqing Petroleum Administration Bureau. There are currently 300,000 exchanges and 55 exchange offices. Public telecommunication and oil communication networks are relatively large in scale, and their share of market share is basically the same, each with a competitive advantage and the competition is fierce with a serious negative impact