Power grid enterprises belong to typical network and natural monopoly industries.
电网企业属于典型的网络型自然垄断型产业。
As one of important flow industry, petrifaction enterprises have typical material supply chain characters.
石化行业作为重要的流程工业之一，有其典型的物资供应链特点。
As one of important flow industry, petrifaction enterprises have typical material supply chain characters.
石化行业作为重要的流程工业之一，有其典型的物资供应链特点。
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