PET of polyester chip level of quality mainly by the foundation and the formulation of the quality performance， slice and solid-phase polycondensation viscous process of the Discusses the level of polyester chip production process， quality indicators， and the influence of the product quality and the processing use of performance factors are analysed， research， and put forward the improvement of the quality of In addition， it introduces the application of it: as for mineral water， carbonated soft drinks， hot filling drinks， beer， etc
