In 20 years, the development cost compression has nearly come to extreme. High transparent cost and fierce competition situation make the profit margins of terminal sales only maintaining at around 15%. In addition, intratype competition leads to lower profits and cash transaction is resorted to increasing cash flow so as to reduce the pressure of lower profits. It is also the same with the gridding cloth sales. But capital characteristics of construction industry makes deposit became the norm. On the one hand, it can lower profits. On the one hand, slow capital flow makes gridding cloth business worse year by year. Here worse is relative to the past.
