The film is excellent in heat shrinkability, mechanical strength (tensile strength, film impact), and moisture resistance.

This increases the mechanical strength and impact resistance.

　[Problem] Polyamide-imide resins are materials exhibiting excellent heat resistance, mechanical strength, electrical properties and chemical resistance.

This polymer compound has excellent mechanical strength (flexural strength).

A rubber composition excellent in strength, abrasion resistance and antistatic properties and reduced in rolling resistance.