In the international are collectively known as thermoplastic elastomers, English abbreviation: TPE. As for the TPE usually mentioned, it is a blend of SEBS / SBS + PP + naphthenic oil + calcium carbonate + auxiliaries, also known as environmentally friendly soft plastics in the industry; It is an elastomer based on EPDM, which is dynamically vulcanized; TPU, also known as polyurethane, has two types: polyester and polyether.