plastic modifier was developed gradually after the industrialization of PVC. After the 1960s, due to the rise of petrochemical industry, plastic industry developed very fast, plastic auxiliaries have become an important chemical industry. According to the difference of plastic variety composition and plastic use in different countries, the consumption of plastic auxiliaries is about 8% ~ 10% of the plastic output. Today, plasticizers, flame retardants and fillers are the most commonly used plastic additives.