女女同性女同区二区国产_亚洲乱亚洲乱妇22p中文影视_亚洲欧美人成人综合在线观看_国产欧美成aⅴ人高清

Polypropylene high-strength fiber is high-strength polypropylene multifilament, which belongs to polypropylene fiber. Polypropylene fiber is composed of isotactic polypropylene macromolecules arranged in a regular and orderly manner and has a high degree of crystallinity.

Polypropylene high-strength yarn are becoming highly competitive fiber raw materials in the industrial field with its high tensile strength and impact strength, and are increasingly being used in occasions where there are special requirements for physical properties. It is gradually occupying some markets for industrial textiles and hopes to expand its market.