Monofilament is a single filament with sufficient strength and toughness, which can be directly used as a single yarn or network cable. The thicker synthetic fiber monofilament (2000~ 3000Dtex) can be used as fishing net line or rope. Slightly thin monofilament (66Dtex above) can be used as artificial silk, wigs, eyelashes, eyebrows and brushes, etc.; Fine monofilaments (44~ 55dTEX) can be made car cushion gap cloth, mattress, shoulder pad, cup, curtain cloth, etc.; Monofilament with a line density of 22~33dtex is widely used to weave silkworm fabrics, turbans, wedding dresses, faces, shoes, etc. Finer monofilaments (6~13dtex) can be processed into elastic filaments, which are used to weave 3 monofilaments hosiery and other high grade textile fabrics.