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According to Acordis, polypropylene industrial yarns are filaments of strength ≥6.5 cN / dtex and linear density ≥70 dtex. According to Sura company, polypropylene industrial yarn is basically used in non-fabric and non-home decoration. But over the years, people generally put high-strength filaments in the industrial yarn inside statistics. High-strength filament including polyester industrial yarn, nylon industrial yarn, polypropylene industrial yarn and viscose industrial yarn. Polyester industrial yarn and nylon industrial yarn belong to high → medium strength filament (the strength of medium-strength silk is about 20% lower than that of high-strength silk), and the largest market share of nylon industrial yarn is about 45%, followed by polyester industry Silk, generally about 40%, the rest of polypropylene industrial yarn and viscose industrial silk.