Polypropylene lines are mainly divided into undeformed filaments and bulked textured yarns, which in turn contain fine denier and coarse denier classes. According to the survey, the market still uses a lot of heavy deniers, which is the kind of middle- and low-end denim weaving. Most of the information is also about the denier fibers on the bags.

Polypropylene monofilament is a single filament produced from a single-hole spinneret from the production of chemical fibers. It is a single silk. In general, there are 0.2mm and 0.25mm specifications. Multifilament is associated with polypropylene filaments and it is a web-like polypropylene filament.

Polypropylene thread filaments are generally 24F, 36F simple point is a string of 24 and 36 monofilament is like a fishing line is a single root. There are also people who have confused polypropylene fibers with polypropylene filter cloths. Polypropylene filter cloth specifications AB AB, for example, 750A refers to plain polypropylene mesh, 750B refers to twill polypropylene mesh. The filter cloth is a filter medium made of natural fibers and synthetic fibers, and the polypropylene filament is a kind of yarn, although the raw material in the filter cloth also contains polypropylene fibers.