PP spinning enterprises from home and polypropylene materials developed property, and is the long-term development of the small number of PP coloring and function masterbatch business. For a long time to develop and produce a lot of accumulation and specific application of lessons learned, a breakthrough innovation. Shanghai Petrochemical products such as large-scale enterprises colored fine denier polypropylene staple development. January 1997 and April, PET and PP whitening black masterbatch fine by the China Textile University (now Donghua University) fiber material modification of key national laboratories, tested and approved, in December 1999, for anti-aging Masterbatch High-strength fiber silk, with the Ministry of Chemical Industry Institute of Materials Synthesis 1000 hours accelerated aging test, strength retention rate as high as 87.7%. Sanya October 2004 meeting, company representatives participated...