Thermoplastic Polyester Elastomer (TPEE) is a block copolymer, which: contains a high melting point, high hardness of the crystalline polyester hard segment and the glass transition temperature of the lower amorphous polyether or polyester soft segments, two-phase linkage structure, the hard chain segments of the crystallization of the physical cross-linking effect, stabilize the size of the product, the soft chain segments of the amorphous polymer to give a high degree of elasticity.