PP-2500HY E hlahisoang ke China Energy Group Ningxia Coal Industry Co., Ltd,e ipapisitse le khase ea Novolen ea NTH-phase polypropylene technology.Sehlahisoa se hlahisoa ka polymerized propylene le ethylene e le thepa e ka sehloohong e tala, Tlas'a ketso ea catalyst, ka mokhoa oa polymerization, karohano, granulation, liphutheloana, joalo-joalo.