Study two companies can help look at the president on the market trend. Levi s, the company can find the source of the case, the similar research, let the opponent can look at other companies to raise prices, product, customer response. However, when the application of the two level may lead to the data source which may be suitable for the problem, but can not solve everything. Levi is to be carefully studied and considered in the search for information, through the two level of research, to avoid waste of time and resources.
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