Polyethylene (PE): Commonly used polyethylene can be divided into low pressure polyethylene (HDPE), high pressure polyethylene (LDPE) and linear high pressure polyethylene (LLDPE). Among the three, HDPE has better thermal properties, electrical properties and mechanical properties, while LDPE and LLDPE have better flexibility, impact properties, and film-forming properties. LDPE and LLDPE are mainly used in packaging films, agricultural films, plastic modification, etc., while HDPE is widely used in films, pipes, injection daily necessities and other fields.

Divided into high density polyethylene and low density polyethylene. Among the daily common products, high-density polyethylene includes boxes for beer bottles and yogurt bottles; low-density polyethylene mainly includes plastic films and water pipes. Construction is mainly used for the production of drainage pipes, sanitary ware. This kind of plastic product feels smooth, delicate, tough, easy to burn when ignited, and has the smell of paraffin.