Silicone is a thermosetting elastomer, with the advantages of safety and non-toxic. TPE is a Thermoplastic Elastomer material. It can be recycled and processed by injection molding. TPU is called Thermoplastic polyurethane elastomer. PVC is polyvinyl chloride, is the world’s largest production of common material, applications widely. Rubber there are many types of rubber, such as natural rubber, cis-1, butadiene-styrene rubber, propylene rubber, and of course silicone rubber.