Evolutionary Game and Numerical Simulation of Enterprises' Green Technology Innovation: Based on the Credit Sales Financing Service of Supply Chain

In the context of economic transformation and ecological civilization construction, breaking financing constraints and carrying out green technology innovation has become an urgent task for enterprises to achieve green and sustainable development in China. As a financing method of the supply chain, can credit sales effectively promote enterprises' green technology innovation? This paper constructs an evolutionary game model between upstream and downstream enterprises. Firstly, the interaction between credit sales and green technology innovation is explored through an evolutionary equilibrium analysis. Secondly, the influencing factors of credit sales and green technology innovation decisions are analyzed through a numerical simulation. The study found that: (1) Under the condition of evolutionary equilibrium, the credit sales of upstream enterprises and the green technology innovation of downstream enterprises can form a virtuous circle mode of "financing-income generation-benefit sharing". That is, a win-win situation can be achieved through the internal circulation of the supply chain. (2) Profit distribution is one of the key issues in the game between upstream and downstream enterprises. The willingness of upstream enterprises to provide credit sales and downstream enterprises to carry out green technology innovation is positively related to the benefits they enjoy from green technology innovation. (3) The supervision cost is an obstacle for upstream enterprises' credit sales. A practical and inexpensive account recovery guarantee mechanism is an effective way to improve the willingness of upstream enterprises to provide credit sales. (4) The government's green subsidy is beneficial to the whole supply chain's "credit sales-green technology innovation" mode, which not only directly stimulates downstream enterprises' green technology innovation but also stimulates upstream enterprises' credit sales through benefit sharing. This paper enriches the relevant research on green technology innovation of the supply chain and provides a reference for green technology innovation and financing interaction between upstream and downstream enterprises.