The entire bio-organic fertilizer production line is based on well-rotted organic raw materials. The core process consists of eight major steps: raw material pretreatment, high-temperature fermentation, crushing and screening, batching and mixing, granulation, drying and cooling, screening and coating, and finished product packaging. The first step, raw material pretreatment, involves collecting organic materials such as livestock and poultry manure, straw, and mushroom residue. A conditioning agent is added to adjust the carbon-to-nitrogen ratio to approximately 25:1, and water is added to control the moisture content at around 55%. Hard impurities such as stones and plastics are removed to avoid damaging subsequent equipment. The second step is trough-type aerobic fermentation. The material is fed into the fermentation trough and turned regularly using a chain-plate turner to ensure oxygen supply. The temperature is raised to 55-65℃ and maintained for 7-15 days to kill insect eggs and pathogens, completing the decomposition of organic matter. The third step is crushing and screening. The well-rotted material is finely crushed by a crusher and then sieved to remove lumps and large pieces, ensuring the raw material meets the fineness standards and providing qualified powder for granulation. The fourth step is ingredient mixing. The fermented organic powder, trace elements, and functional biological agents are precisely measured according to the formula and fed into a mixer for thorough mixing, ensuring uniform distribution of nutrients and live bacteria in each batch. The fifth step is granulation. Using roller extrusion or disc granulation, the powder is extruded into regular granules with moderate strength, making them suitable for field application. The sixth step is drying and cooling. The wet granules are placed in a low-temperature drying device to reduce the moisture content to below 20%, followed by air cooling to prevent high temperatures from killing the beneficial bacteria and ensure a high survival rate. The seventh step is finished product screening and coating. Qualified granules are screened out, and broken pieces are recycled. An anti-caking coating agent is sprayed as needed to improve the storage stability of the granules. The eighth step is automatic metering and packaging. Qualified finished products, after testing for live bacteria count and organic matter content, are quantitatively bagged, sealed, and stored, completing the entire production process. The entire process is interconnected. Fermentation and composting, along with the mixing of biological agents, are key processes that distinguish bio-organic fertilizer from ordinary organic fertilizer, directly determining the core quality of the product.