Research on mechanism and countermeasure of China's technical structure on manufacturing export trade 并列题名：Research on mechanism and countermeasure of China's technical structure on manufacturing export trade Research on the mechanism and countermeasure of servitization affecting labor income share Research on mechanism and model of logistics outsourcing network in manufacturing enterprise Research on mechanism and countermeasures for introducing high-level overseas talents Research on the mechanism and countermeasures of local government debt risk in China Research on the impact of opening-up of China's producer services industry on upgrading of manufacturing export products