Polyester thermoplastic elastomer (TPEE) is a linear block copolymer, which is a block copolymer containing polyester hard segments and polyether soft segments. TPEE has the elasticity of rubber and the strength of engineering plastics; The soft segment support elasticity, making it like rubber; the hard segment support processability, making it like plastic; compared with rubber, it has better processability and longer working life; compared with engineering materials, it also has features high strength, while flexibility and dynamic mechanical properties are better.