From the first century BC to the second half of the last century, it has been a widely grown crop. The bast fiber of this annual herb is also one of the earliest varieties used for textile fibers. It can be used as a fiber product, clothing, and rope. Raw materials for sails, sails, grease, paper, and medical supplies, but in the traditional sense, ** has been used as a fiber that can be used to make ropes. Until recently, the process of improving the fineness of fibers was achieved. Development, the use of comfort is really excavated.

Various sewing threads spun from hemp fibers, including castor, linen, and jute. The castor yarn is spun into single yarn using degummed ramie fibers, and several single yarns are twisted into strands at one time. Some ramie threads are slashed and waxed to make them smooth and waterproof. The commonly used castor line is 9.5 public single yarn 6 strands, and some are 2-15 strands. There are also 7.5 single yarns and 36 single yarn strands. The ramie thread is characterized by high strength, low elongation, corrosion resistance and swelling in water. It is mainly used for sewing shoes, leather products, and awnings. It can also be used to sew * gun clothing, aircraft covers, tank covers and Make parachute ropes and more. The flax line is made of semi-degummed flax fibers and then wet-spun into single yarns. Several single-strands are twisted into strands at one time. After the yarns are made, they are boiled and floated to further degumming. The flax line's characteristics, specifications, and uses are basically the same as those of the ramie thread and can be used as a variety of stitches. The jute yarn is spun into a single yarn using semi-degummed ripe jute, once twisted into strands. The commonly used yellow hemp thread is a three-ply and three-pronged single-ply yarn. It is mainly used as a seaming line for sacks, a drapery line for sealing sacks, a ruled line for sofas, and other packaging and strapping lines. 3 Public Branch Lines 2 Jute Lines are generally used as the edges and seam lines of sack fabrics. Due to the high yield and low price of jute, it is still widely used despite its shortcomings such as perishable and non-lightfast after long-term watering.