The cross section of hemp fiber is more complex than that of ramie, flax, cotton and wool. It is irregular triangle, hexagon, oblate circle, waist circle, etc. The middle cavity and shape are different, and its molecular structure is prismatic, loose and spiral. Therefore, hemp fiber has a good dissipation effect on sound waves and light waves, and it can block strong ultraviolet radiation without special finishing

Hemp is a kind of phloem fiber among plant fibers. It is also called hemp in Chinese, or hemp or hemp. Quebec hemp, commonly known as linear hemp, belongs to the mulberry family of annual erect plants, with longitudinal grooves on the stem surface, a height of 2-3 meters, palmate leaves, and 5-9 deep split compound leaves.