Suitable for PVC, vinyl chloride copolymer, cellulose nitrate, cellulose ethyl butyrate, polymethylmethacrylate and other plastics. The plasticizing efficiency and processing performance are similar to those of phthalate plasticizers, and the durability and electrical properties are excellent. It can be used for heat-resistant and durable products such as heat-resistant wire and cable materials, plates and sheet gaskets.