Production development fund is a special fund set up by Chinese enterprises to promote production development. These funds are usually used by enterprises to extract a certain proportion of funds from retained profits for investment to support the production and development projects of enterprises. The establishment of the production development fund aims to provide financial support and promotion for production development projects such as technological innovation, equipment renewal and capacity expansion of enterprises. The use of these funds usually requires strict approval and management to ensure the rational use and efficiency of funds. The establishment of production development fund can help enterprises improve their production capacity, product quality and competitiveness, and promote their sustainable development.