Research on the quotation method for customized products of equipment manufacturing enterprises Research on high quality development path of equipment manufacturing enterprises Research on the formation mechanism and solution of tax pressure on Chinese manufacturing enterprises Research on digital Innovation ecosystem of intelligent manufacturing enterprises 并列题名：Research on the formation mechanism and solution of tax pressure on Chinese manufacturing enterprises Research on digital transformation of Chinese manufacturing enterprises Research on the dynamic mechanism of core competence transition in manufacturing enterprises Research on optimization methods of production cost control in enterprises Research on the risk of internet strategic transformation of manufacturing enterprises Research on the efficiency of digital transformation in Chinese manufacturing enterprises