The filling of enterprise scale should be realistic, taking small and medium-sized enterprises as an example. Enterprise scale is generally divided into super-large, large, medium, small and micro. The scale of an enterprise refers to the demarcation of its production and business scope. According to the number of employees, sales and total assets, the types of enterprises are divided into three grades: large, medium and small, and truthfully filled in. Large enterprises with large output, high technology and concentrated production are the backbone enterprises of industrial production and play a leading role in the economy. Small and medium-sized enterprises have the advantages of less investment, short construction period, quick effect, convenient production specialization, strong ability to adapt to market changes, easy access to raw materials and markets, and flexible production and operation.