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Polyamide long fiber can be used alone or interwoven with other fibers. It can also be twisted into processing silk for knitting or plain weaving. It can be used in underwear for boys and girls' clothing, quilt cover fabrics, socks, raincoats, etc. In addition, polyamide fiber can be used in the outer and inner layers of astronauts' outerwear to protect astronauts from meteorites in outer space with its high strength. In home decoration, it can be used in curtain cloth, shower curtain cloth, umbrella cloth, etc, In industrial use, it can be used for fishing nets, filter cloth, cable, tire cord, liner cloth of wheel conveyor belt and parachute cloth, etc.

Polyamide fiber has good alkali resistance, but poor acid resistance. Under normal room temperature conditioning, it can withstand 7% hydrochloric acid, 20% sulfuric acid, 10% nitric acid, and 50% caustic soda immersion, and the result is not corroded. Therefore, polyamide fiber is suitable for anti-corrosion work clothes. In addition, it can be used as fishing nets, which are not afraid of seawater erosion. The service life of nylon fishing nets is 3 to 4 times longer than that of general fishing nets.