Today, online sales are considered as a phenomenon is popular worldwide due to information technology development manh.no also have advantages and disadvantages in sales for the seller as follows: save the cost is not necessary as the rent for the sales and promotion of products to customers faster hang.ngoai wide, it also helps customers save time, easily compare prices on the market truong.nhung also face the risk is high, volatile customer reviews your shopping leads to loss of travel expenses, lost time gian.vi so, to gain the trust of customers requiring sellers service must have good customer care, customer warranty after purchase.
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