When it comes to feed mill production, many positions are involved. Here is a summary of them in sequence.

　　I. Incoming Raw Material Quality Inspection:
 
In production, ensuring smooth operations and product quality and stability all depend on the quality of the raw materials. Therefore, quality inspection when raw materials arrive at the mill is the first line of defense for product quality. After the raw materials arrive:
 
　　Step one: The first thing to do is weigh the vehicle. Our relevant staff make a detailed record (including the vehicle’s gross weight, license plate, origin of the goods, supplier, name of the goods, etc.).
 
　　Step two: Our quality inspectors check the delivery vehicle to see whether it has a rain cover or tarpaulin for protection, and whether the goods on the vehicle have been exposed to rain.
 
　　Step three: Conduct a sample inspection of the goods, taking samples from different locations on the vehicle. At the same time, inspect the raw materials’ appearance (shape, color, odor, taste, foreign matter, whether they are clumped, moldy, or damp, etc.). Step four: Send the samples to the laboratory for testing and complete the report form at the same time (enter the identification number, supplier, quantity, etc.). Step five: Unload the goods and move them into storage. Raw materials in individual packaging can be unloaded and moved into storage without waiting for the laboratory results. During unloading, quality inspectors must take additional samples and may open packages for inspection if necessary. Raw materials without individual packaging must not be unloaded until the laboratory test results are available and a decision has been made.
 
　　During raw material quality inspection, our inspectors are required to work carefully and attentively, vary the sampling locations without following a pattern, and adhere to work principles. During unloading, they must conduct random inspections at all times to ensure that the inspection work is carried out accurately.
 
　　II. Raw material warehousing and storage:
 
　　After raw materials arrive, they must be stored in the warehouse once approved by the quality inspection personnel.
 
　　Step one: The warehouse keeper communicates with the quality inspection personnel and records the name, quantity, batch, place of origin, or supplier of this batch of raw materials.
 
　　Step two: Unloading and warehousing. Professional personnel unload the materials. The warehouse keeper supervises whether each pallet is stacked neatly and whether the quantities match, and directs the forklift to move each pallet of raw materials to the designated location in the warehouse and stack it neatly. (When storing materials, pay attention to their stacking locations because of certain special characteristics of the raw materials. As a rule, fish meal and soybean meal must be stored separately and not next to each other; piglet feed and strong-smelling raw materials must be stored separately; feather meal must be stored separately; liquid and solid raw materials must be stored separately; and key raw materials must be stored separately from ordinary raw materials. Use first in, first out during use.)
 
　　Step three: Attach identification signs. Under the guidance of quality inspectors based on laboratory test results, attach identification signs to raw materials placed in storage. The signs should state the raw material name, quantity, place of origin or supplier, batch, and whether it may be used, among other information. (Raw materials whose test results are not yet available, those that have failed testing, and those that have passed testing but have not yet entered the use process should be marked with “Do Not Use” signs; raw materials currently in use should be marked with “In Use” signs.)
 
　　Step four: Storage. The storekeeper should inspect the warehouse every day and work with quality inspectors to conduct sampling checks of the raw materials in stock and test their quality. Based on how the raw materials are being used, the storekeeper should update their identification signs, issue raw materials according to the daily production material requisition forms, keep the storeroom orderly and clean, and complete the inventory ledger.
 
　　At this stage, warehouse staff and quality inspectors are required to work conscientiously and responsibly. They should conduct spot checks according to the storage life of each type of raw material in the local area, ensuring that the materials used in production are qualified and safe to use. The storekeeper should arrange the order in which raw materials are issued for production appropriately, following the first-in, first-out principle; adjust the displayed identification signs in a timely manner; and mark important indicators for certain raw materials. In particular, at the issuing stage, the storekeeper must check that the raw material name, quantity, and relevant parameter indicators match production requirements. Storekeepers are preferably trained in raw material quality inspection and familiar with basic raw material inspection methods.
 
　　Three. Weighing materials:
 
　　In production, some raw materials are used in very small quantities each time, so dedicated workers are needed to weigh these materials to meet production requirements.
 
　　Step one: After receiving the small-quantity material dispensing plan and the goods issue slip, the weighing worker promptly goes to the warehouse keeper to collect the required raw materials and packaging bags. The warehouse keeper must check the goods issue slip against the small-quantity material dispensing plan and issue the materials accurately. For materials that are not issued as full bags, full bags are issued; afterward, the weighing worker returns any leftovers.
 
　　Step two: After collecting the materials, calibrate the electronic scale being used to ensure it meets the requirements for use.
 
　　Step three: Weigh and bag the materials according to the minor-ingredient dispensing plan. Complete weighing one ingredient before moving on to the next. After weighing, keep each ingredient separate, then group together the minor ingredients required for each plan and label them to indicate which production plan they are for. Clean the tools whenever changing ingredients to prevent cross-contamination, which could result in inaccurate weighing.
 
　　Step four: After weighing, return the remaining materials to the storeroom and hand them over to the storeroom keeper. The storeroom keeper must then sort and weigh the returned materials and, together with the issue slip for this plan, calculate the actual quantity of each type of raw material used for this plan based on the remaining materials, and compare it with the planned usage quantity to ensure the usage quantity is accurate.
 
　　Step five: After weighing is complete, clean and organize the tools and work area.
 
　　This process mainly involves weighing small ingredients. The key is to ensure that the actual amount used matches the planned amount. The warehouse manager can check the total quantity of each type of raw material used. Workers are required to be careful and patient, and to stack the materials accurately after weighing, without making any stacking errors.
 
　　Four. Feeding:
 
　　This stage is the true beginning of the production process. It can be said that this stage affects whether production can proceed smoothly and whether production efficiency can be improved.
 
　　Step one: Inspect and maintain the required equipment, then start preheating. Clean and organize the site.
 
　　Step two: After receiving the material-feeding plan and raw material issue slip, workers go to the raw material warehouse to collect the materials. The warehouse keeper carefully checks the material-feeding plan against the issue slip and, based on the issue slip, releases the materials in the order specified in the material-feeding plan. When issuing raw materials, verify the material names, quantities, and batches, and follow the first-in, first-out principle.
 
　　Step three: After the ingredients have been brought over, arrange them according to the feeding sequence. The recorder and quality inspector should make records and conduct quality checks. The person feeding the ingredients should notify the central control room that feeding is about to begin, and provide the types, names, and quantities of the ingredients to be fed. Feeding may begin after approval is received from the central control room. The key point here is the feeding of minor ingredients. Since several types of minor ingredients are added to the same batch, after the minor ingredients have been collected from the storeroom (and weighed), the quality inspector should conduct a spot check to verify their types, weights, and quantities, and confirm that they meet production plan requirements. Before feeding each batch, the person feeding the ingredients should weigh each type of minor ingredient on an electronic scale and compare it with the corresponding minor-ingredient weight in the annual production plan to verify its accuracy, then feed it.
 
　　Step four: After each type of raw material has been added, let the equipment run idle for 1－－3 minutes, while cleaning the area where the material was added. Then communicate with the central control room before adding the next type of raw material. Clean the small-ingredient dispensing area after each addition.
 
　　Step five: When adding raw materials, determine whether they need to be crushed and select the appropriate feeding port. Visually inspect the raw materials as they are being added. If anything abnormal is found, promptly communicate with the quality inspector and address it. Abnormalities include caking, mold, moisture, and foreign matter. Each time raw materials are added, record their names, batch numbers, quantities, and feeding times, and submit the records to the central control room before the end of the shift.
 
　　Step six: After all the raw materials have been added, let the equipment run idle for 3－5 minutes, clean the multiple work areas, check whether the equipment is operating normally, then shut it down, clean and maintain the equipment, and remove the filtered-out foreign matter.
 
　　Five. Granulation:
 
　　Pelleting is an important step in the production of pellet feed. At this step, it is important to monitor the temperature, air pressure, and current.
 
　　Step one: Equipment setup. After receiving the production plan, check whether the pellet mill ring die is the required one. If not, replace it. Lubricate and inspect the equipment, and drain the water from the condensate pipe.
 
　　Step two: Open the discharge port and start the equipment in sequence.
 
　　Step three: Run the equipment at low speed, feed a small amount of material, apply steam, and bring the material to a suitable conditioning state. Close the discharge gate and feed the material.
 
　　Step four: Adjust the equipment until it reaches a stable state, then begin production.
 
　　Step five: After production is finished, promptly release the remaining material from the conditioner, and clean the pelletizer. This step requires workers to be meticulous, respond quickly, and consistently follow the operating procedures. They should clearly understand the requirements for the ring die and for conditioning the raw materials for each different formula.
 
　　Six. Central control:
 
　　This stage is the central nervous system of the entire production process. You could say that all information from the production process is gathered here, and all kinds of instructions are issued from here.
 
　　Step one: Calculate the required quantities of raw materials based on the production plan and the corresponding formula. In conjunction with the warehouse inspector’s report on storage conditions in the storage rooms, work with the inspector to develop a restocking plan (types and quantities of raw materials to restock, order, storage rooms, etc.), then issue the plan to the raw materials warehouse keeper and the feeding operator.
 
　　Step two: Start the relevant equipment in sequence, check that it is operating normally, and preheat it. At the same time, configure the computer program according to the plan and formula.
 
　　Step three: Once the material handler confirms that the raw materials are in place, begin feeding materials for production according to storage conditions. During production, make timely adjustments based on instructions from the material handler, warehouse inspector, granulator operator, and the equipment’s operating status. Operate the equipment to ensure smooth production, and notify the warehouse inspector to inspect the warehouse and make records promptly.
 
　　Step four: After production is complete, shut down the equipment in order, record the day's production, and clean the area. This stage requires workers to be responsible, careful, patient, and quick to respond.