那么随着社会的发展，市场的推广费用，比如说：商场的促销人员、商场的陈列费用、产品的赠品费用、广告费用等也在不断的增加。
With the development of society, the market promotion expenses kept increasing, such as the cost of promotion personnel at shopping malls, the display expenses of products at shopping malls, the cost of gifts of products, advertising expenses, etc.