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提高石油销售企业计算机网络的安全性至关重要近年来,作为中国石油化工股份有限公司直属的各省销售企业计算机网络发展非常快,全部建成了以省级公司为中心
In recent years, as a subsidiary of China Petroleum & Chemical Corporation in various provinces, sales of computer networks developed very fast, all built to the provincial-level companies as the center