PP-2500HY E hlahisoang ke China Energy Group Ningxia Coal Industry Co., Ltd, e ipapisitse le theknoloji ea NTH ea Novolen gas-phase polypropylene. Sehlahisoa sena se hlahisoa ka propylene e nang le polymer le ethylene e le thepa e tala ea mantlha, Tlas'a ts'ebetso ea catalyst, ka ts'ebetso ea polymerization, karohano, granulation, sephutheloana, jj.