Suitable for medium and large supermarkets and food processing plants, including fresh meat, fruits and vegetables and cooked food and other fields, fast packaging speed, strong stability. The unique inheritance and wiring mechanism makes the assembly line simpler and more efficient. Imported high-precision replacement technology, the residual oxygen rate of each box is less than 0.5%. Large mold, one time to complete more packaging. High precision chain box feeding method is accurate and stable.