PP-K4860 O loʻo gaosia e Saina Energy Group Ningxia Coal Industry Co., Ltd, faʻavae i luga o le NTH's Novolen gas-phase polypropylene technology.O le oloa e gaosia i le polymerized propylene ma le ethylene e avea ma mea mataʻina autu, I lalo o le gaioiga a se faʻamalosi, e ala i le faagasologa o le polymerization, vavaeeseina, granulation, afifiina, ma isi.