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本文通过总结企业进口参与和生产率之间的关系,发现大多数实证研究认为,存在着企业进口的自我选择效应,同时也发现进口活动对企业生产率有提高作用。而对进口产品必须区分产成品和中间投入品,实证研究发现,削减产成品和中间投入品关税,都能够提高企业生产率,并且投入品关税削减的促进作用更大。企业参与进口贸易的最新研究成果,对转变我国贸易发展方式,提高对外贸易质量和效益具有重要的现实意义。
By summarizing the relationship between import participation and productivity of enterprises, we find that most of the empirical studies suggest that there exists the self-selection effect of the import of enterprises and at the same time, it is found that the import activities have an impact on the productivity of enterprises. However, the imported products must distinguish between finished products and intermediate inputs. Empirical studies have found that cutting the tariffs on finished products and intermediate inputs can both raise the productivity of enterprises and contribute more to the reduction of tariffs on inputs. The latest research results of enterprises participating in import trade have important practical significance for changing the mode of China’s trade development and enhancing the quality and efficiency of foreign trade.