Since the reform and opening up, China's industrial structure has undergone four stages of upgrading: from the labor-intensive textile and chemical fiber industry, to the capital-intensive iron and steel, shipbuilding, refining and chemical industries, and then both capital- and technology-intensive automobile, machinery, electrical appliances manufacturing industry, until the current technology-intensive microelectronics and information technology manufacturing industry. Foreign direct investment has always been the most important way for China to receive international industrial transfer. Corresponding to the unbalanced state of China's economic development, China's absorption of international industrial transfer is also mainly concentrated in the eastern coastal region, especially the Yangtze River Delta region, the Pearl River Delta region and the Bohai Economic Rim, the vast central and western regions accounted for only about 15% of foreign direct investment. This development situation has objectively formed the industrial gradient difference between the east and west, and has brought the possibility and opportunity for further industrial upgrading in the east and west of China.