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中国邮政商函专业正在全面开展BIU建设。什么是BIU?BIU是否对商函业务有帮助?如果有帮助,投资期有多长,又有多少收益呢?这些都是中国邮政关心的问题。
China postal letter professional is carrying out BIU construction in an all-round way. What is BIU? Is BIU helpful for business letter business? If so, how long is the investment period and how much is it? These are issues that China Post cares about.