It seems that there is no explanation from the root cause. Let me talk about the fundamental principle. When Excel reads csv, it identifies the encoding by reading the bom in the file header. This causes the platform where we generate the csv file to output a csv file without bom header encoding (such as utf. Ka is the store, English: key account, important customer. cvs is convenience store, English convenience store k a and cvs are both imported products that entered China in the 1990s. Carrefour and Walmart are just hypermarkets;
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