It is an artificial cellulose fiber, which is spun by solution method. As the solidification rate of the fiber core layer is inconsistent with that of the outer layer, the skin core structure is formed (it can be clearly seen from the cross-section slice). Viscose is the most hygroscopic among ordinary chemical fibers, with good dyeing property, good wearing comfort, poor elasticity, and poor strength and wear resistance in wet state. Therefore, it is not resistant to washing and has poor dimensional stability. Heavy weight, heavy fabric, alkali resistant and acid resistant.