In May 2020, Taian City Blue Sky Auxiliaries Co., Ltd. driven by a spirit of continuous innovation, contributed to pandemic prevention efforts by launching a new PP1500 meltblown material production line. This polypropylene meltblown material is a high-flow PP meltblown compound specifically designed for producing meltblown nonwoven fabric used in mask filter layers. Primarily employed in manufacturing masks and protective clothing, it plays a vital role in pandemic control.