The cost-saving methods of building an organic fertilizer production line are as follows:

1. Optimize the process flow: Rationally plan the workshop layout according to the production process, reduce the material transportation distance and time, and improve production efficiency. Use advanced fermentation, granulation, drying and other processes to improve production efficiency and reduce energy consumption.

2. Improve the degree of automation: Reduce manual intervention and reduce labor costs. Use the automatic control system to achieve precise operation of equipment and improve production efficiency.

3. Strictly control raw materials: Select cost-effective raw materials to reduce raw material costs. Primary treatment of raw materials to reduce impurities and scrap rates.

4. Reasonably arrange production plans: Rationally arrange production plans according to market demand and raw material supply to avoid inventory backlogs. Flexibly adjust production output according to market demand to reduce the fixed cost of unit products.

5. Take advantage of policy support: Actively strive for government subsidies and preferential policies for the organic fertilizer industry. Take advantage of tax incentives to reduce the operating costs of enterprises.

6. Choose the right equipment configuration: Adopt a new design of one machine with multiple slots to effectively save space and equipment investment funds. Choose energy-saving organic fertilizer equipment to reduce energy consumption.

7. Optimize staffing: Improve employees' operating skills and efficiency, and reduce waste caused by improper operation. Make reasonable division of labor according to employees' skills and experience to improve work efficiency.

Through the above methods, you can effectively save costs, improve production efficiency and economic benefits when building an organic fertilizer production line.