Is mainly and to the industry and agriculture department which does not gain gives the subsidy through the nontariff limit administration legal measure, achieves the limit import, to encourage the export, to protect its had the market goal. Emerges after this kind of policy, the nontariff barrier already substituted for the tariff barrier to become the trade protectionism the main form. In nature, it is one kind of superficiality policy, is really big to the international trade and the world economics harm, will harm finally also implements these policy country own economic development 、、汗啊！累死我了、、绝对不是机译的额、、