Stretching winding film is a kind of packaging method that is very popular in the world. It is a kind of packaging method that uses mechanical tensile device or manual drawing to force the film to produce deformation stress at room temperature. Imported resin and advanced film extrusion production process. It has the characteristics of good tensile performance, tear resistance, strong penetration resistance, high transparency, good self-viscosity, high shrinkage, tight packaging, and no looseness. Can be widely used in chemical raw materials, fertilizers, food, electromechanical products, textile products, such as single or pallet packaging and other bundled packaging.