Most plastics are light, chemically stable and will not rust.

(2) Good impact resistance;

(3) It has good transparency and wear resistance.

(4) Good insulation and low thermal conductivity;

_General formability, good coloring, low processing cost;

_Most plastics have poor heat resistance, high thermal expansion rate and are easy to burn.

_Dimensional stability is poor and easy to deform.

_Most plastics have poor low temperature resistance and become brittle at low temperature.

_Aging easily;

Some plastics are soluble in solvents.