Analysis on Composite System Objectives Coupling between the Technical Innovation and Global Value Chain Upgrading of China's Equipment Manufacturing Industry

The composite system coupling model is introduced to analyze the mechanism of the composite system on the coupling target. Taking China's equipment manufacturing industry as the research objective, the composite system coupling model is constructed. On the basis of calculating the three target values of total factor productivity, GVC status index and GVC forward participation, the weakening factors and contributing factors affecting the coupling of the composite system are calculated according to the target coupling model. And the key factors influencing coupling evolution in different stages are determined