Dioctyl terephthalate (DOTP) is a high-performance main plasticizer for polyvinyl chloride (PVC) plastics. Compared with the currently commonly used di-2-ethylhexyl phthalate (DOP), it has the advantages of heat resistance, cold resistance, low volatility, anti-extraction, flexibility and good electrical insulation performance. It shows excellent durability, soap water resistance and low-temperature flexibility in Chemicalbook products. Due to its low volatility, the use of DOTP can fully meet the temperature resistance grade requirements of wires and cables, and can be widely used in 70℃ resistant cable materials (International Electrotechnical Commission IEC standard) and various other PVC soft products.