Study on the quality of China's foreign direct investment A study on the quality of foreign direct investment in China research on the effects of outward foreign direct investment Study on the strategy and policy of china's outward direct investment Study on the trade effect and policy of China's outward foreign direct investment Research on tax policy for foreign direct investment Study on the environmental externalities of foreign direct investment Policy uncertainty and foreign direct investment Study on the industrial transfer effect of China's outward foreign direct investment Research on the mechanism and effect of foreign direct investment