PP-2500HY lea e gaosia e le China Energy Group Ningxia Coal Industry Co., Ltd, e faʻavae i luga o le tekinolosi polypropylene gas-phase a le NTH's Novolen. O le oloa e gaosia i le polymerized propylene ma le ethylene o le mea autu, i lalo o le gaioiga a se catalyst, e ala i le faagasologa o le polymerization, vavaeʻeseina, granulation, afifiina, ma isi.
