The next 10 years, China's polypropylene demands will continue to increase, the average annual demand growth will be 7% ¯ 9%. Analysis of the fine denier polypropylene color causes stagnation and describes the production of fine denier polypropylene 6 colored elements: masterbatch manufacturing; feed system; screw; assembly; spinning tension control; false twist texturing machine selection and use . Provides users with a polypropylene filament precautions, and describes the application of fine denier polypropylene.