精品久久久久久久久午夜福利,H福利在线观看网站,18禁黄网站无码无遮挡,国产一区二区精品久久岳

TPEE

       TPEE is a block copolymer containing a hard segment of polyester and a soft segment of polyether. TPEE has the elasticity of rubber and the strength of engineering plastics; the soft section gives it elasticity, making it like rubber; the hard section gives it processing properties, making it like plastic;