The recycled polyester (PET) is used as the material, the polyester long chain is decomposed by chemical method, and then the high-purity DMT is generated, then used the green and efficient DH-HyTi Ti catalyst, which is then prepared by the DMT method through the process of synthesis and granulation, high end chemical recycled polyester chips are of the same quality as the native polyester chips, with excellent spinnability. Other special recycled polyester chips can be customized.