Soft PVC is mostly produced with high molecular weight PVC resin, that is, most of them are produced with SG4 type and above resin. Containing more plasticizers, its softness, elongation at break, cold resistance increase, soft texture, good air tightness and water impermeability. Although the electrical insulation is reduced due to the addition of plasticizers, it still maintains a very high electrical insulation. Brittleness, hardness, and tensile strength decrease. Mainly used in wire and cable, agricultural film, packaging film, industrial film, hose, artificial leather, plastic shoes, etc. Processing mainly adopts extrusion, calendering and other processing methods, and a small part adopts injection molding processing.