长尾现象或者说长尾效应,提醒我们,世道变了。原来我们认为的20%的关键客户已经不能带给我们80%的销售收入,原来我们认为的20%的主流商品也已经不能再带给我们80%的销售收入。这里,并不是关键客户和主流商品的销售变少了, Long tail phenomenon or long tail effect, to remind us that the world has changed. We think the original 20% of the key customers can no longer bring us 80% of sales revenue, the original 20% of the mainstream of our products that we can no longer bring about 80% of sales revenue. Here, sales of key customers and mainstream products are not reduced,