Research on the impact of China's outward foreign direct investment on export product quality Impact of China's outward foreign direct investment on value-added in export Research on China's outward foreign direct investment of SCO members 并列题名：Impact of China's outward foreign direct investment on value-added in export Effects of China's outward foreign direct investment on home-country trade Impact of China's outward foreign direct investment on China's economy 并列题名：Impact of China's outward foreign direct investment on China's economy Research on risk prevention of China enterprise' outword foreign direct investment in the silk road economic belt Research on the impact of knowledge characteristics on patent quality 并列题名：Research on risk prevention of China enterprise' outword foreign direct investment in the silk road economic belt