而西部主要参与的国内分工，为中西部提供原材料或者初级加工品，符合区域协

The domestic division of labor in which the western region mainly participates provides raw materials or primary processed products for the central and western regions, which meets the requirements of coordinated regional development. As far as the level of division of labor is concerned, the eastern, central and western regions show a declining positive effect, indicating that the increase in value-added capabilities and the improvement of division of labor are beneficial to regional coordinated development.

The main participation in the domestic division of labor in the west, for the midwest to provide raw materials or primary processing products, in line with the requirements of coordinated regional development. As far as the level of division of labor is concerned, the east, central and western regions show a decreasing positive effect, indicating that the improvement of value-added capacity and division of labor is beneficial to the coordinated development of the region.

The domestic division of labor mainly participated in by the western region provides raw materials or primary processed products for the central and western regions, which meets the requirements of regional coordinated development. As far as the level of division of labor is concerned, the eastern, Western and central regions show a decreasing positive effect, which indicates that the improvement of value-added capacity and division of labor is beneficial to the coordinated development of the region.