PP-K4860 E hlahisoang ke China Energy Group Ningxia Coal Industry Co., Ltd, e thehiloeng ho theknoloji ea NTH's Novolen gas-phase polypropylene.Sehlahisoa se hlahisoa ka polymerized propylene le ethylene e le thepa e ka sehloohong e tala, tlas'a ts'ebetso ea catalyst, ka ts'ebetso ea polymerization, karohano, karohano.