Shanghai Lianfeng Gas Co., Ltd., o se taʻutaʻua gaosi oloa ma faʻatau atu le vavaeeseina o kesi ma mea faʻamamāina i Saina, ofoina atu le Pressure Swing Adsorption (PSA). O lenei tekinolosi faʻapitoa e faʻaaogaina lautele mo le vavaeeseina o kasa e pei o le okesene, nitrogen, ma le carbon dioxide mai le ea, faʻamamaina o le hydrogen, ma isi mea faʻapisinisi. Faatasi ai ma le sili atu i le 20 tausaga o le poto masani i le gaosiga o kesi, Shanghai Lianfeng Gas Co., Ltd. o loʻo tuʻuina atu tekinolosi faʻapitoa i la latou masini faʻagasologa PSA, ofoina atu oloa maualuga e lelei, faʻatuatuaina, ma faʻafetaui manaoga faʻapitoa o talosaga taʻitasi. I le avea ai o se falegaosimea a PSA meafaigaluega i Saina, Shanghai Lianfeng Gas Co., Ltd. faʻafeiloaʻi manaoga eseese o tagata faʻatau i le lotoifale ma le lalolagi atoa, tuʻuina atu fofo faʻapitoa e faʻateleina ai le tau ma faʻaitiitia tau. Faatasi ai ma le taulaʻi i le lelei, saogalemu, ma le faʻaauau, Shanghai Lianfeng Gas Co., Ltd.'s PSA process equipment o se filifiliga lelei mo pisinisi eseese.