Need. Natural rubber needs to be vulcanized after drying. Vulcanization is an important link in natural rubber processing, which can improve the elasticity and cold resistance of rubber, as well as the strength and wear resistance of rubber. During the drying process of natural rubber, water will be removed, but the molecular structure and chemical bonds in rubber still exist, which needs further aging treatment to promote the cross-linking reaction between molecules and improve the properties of rubber. Therefore, natural rubber needs to be vulcanized after drying.