Fa'ailoaina le Shanghai Lianfeng Gas Co., Ltd., ose ta'uta'ua gaosi oloa, fa'atau oloa, ma le falegaosimea o la'au fa'atupu fa'ato'aga i Saina. O a matou la'au fa'aonaponei fa'aonaponei ua fuafuaina e fa'amalieina mana'oga 'ese'ese o alamanuia, maua ai se tali fa'atuatuaina ma taugofie mo le gaosiga o kasa nitrogen. I Shanghai Lianfeng Gas Co., Ltd., matou te fa'amaualuga i matou i lo matou tomai i le gaosiga o la'au fa'atupu fa'atosina e fetaui ma tulaga maualuga o le lelei ma le lelei. Faatasi ai ma a matou tekinolosi faʻaonaponei ma tausaga o le poto masani, ua matou atinaʻeina le tele o laʻau faʻatupuina o le nitrogen e faʻamautinoa ai le faʻatinoga sili ona lelei ma le maualuga o le gaosiga. O a matou laau fa'atupu fa'amatu'u ua mamanuina e maua ai le kasa fa'amama maualuga e ala i le tu'u'ese'esega o mole mole oona mai le ea e fa'aaoga ai le fa'aogaina o le membrane po'o le pressure swing adsorption (PSA) tekinolosi. Ole mea lea e mafai ai ona gaosia i luga ole nofoaga ole kasa nitrogen, faʻaitiitia ai le manaʻoga mo pusa kasa nitrogen taugata ma le faʻalavelave poʻo le kilivaina o tane. Pe e te manaʻomia le kasa nitrogen mo le gaosiga o meaʻai ma meainu, vailaʻau, gaosiga uʻamea, poʻo soʻo se isi lava talosaga, Shanghai Lianfeng Gas Co., Ltd.'s nitrogen generation plants e ofoina atu se fofo faʻapitoa e fetaui ma ou manaʻoga patino. Filifili Shanghai Lianfeng Gas Co., Ltd. e fai ma au paaga fa'atuatuaina mo la'au fa'atupu fa'ato'aga sili ona lelei. Fa'afeso'ota'i matou i aso nei e a'oa'o atili pe fa'afefea ona fa'amanuiaina lau pisinisi a matou la'au fa'atupu nitrogen.