improvement trade

As a main mode of trade in our country, the volume of improvement trade accounts for nearly fifty percentage of the whole international trade. Moreover, the improvement trade has a complex process, variety forms, which can easily disguise criminal activities.

加工贸易作为我国的主要贸易形式，占据我国国际贸易的半壁江山，其流程复杂，形式多样更容易成为犯罪分子洗钱的掩体。

Although the improvement trade has already become an important motive force and chief mode of trade in the gradual increase of the export of the foreign trade in China, there still exist some problems in it.

加工贸易成为我国外贸出口不断增长的重要推动力和首要贸易方式，但也存在着问题和不足。

Our analysis further shows that as classified according to the mode of trade, the improvement trade, with elastic efficient as 0.73, has bigger positive influence on the patent quantity than general trade.

研究还表明，货物贸易中按贸易方式分类的加工贸易对专利影响显著为正，弹性系数为0.73，比一般贸易对专利的正面影响更大。

So unreasonable deductions and exemptions should be died out by cutting down tariff, optimizing the effective protective structures of tariff and the protective policy for improvement trade to promote the sound development of foreign trade.

建议通过降低关税水平、优化关税的有效保护结构及加工贸易的保税政策、取消不合理减免等方面的调整，促进对外贸易的健康发展。