PP-K4860, quod a societate China Energy Group Ningxia Coal Industry Co., Ltd. producitur, innixum technologiae polypropyleni gas-phasis Novolen ab NTH. Productum hoc producitur cum propyleno et aethyleno polymerizatis ut materia prima principali, sub actione catalysatoris, per processum polymerizationis, separationis, granulationis, involucri, etc.