Ho hlahisa tsamaiso ea Vacuum Pressure Swing Adsorption (VPSA), e tlisoang ho uena ke Shanghai Lianfeng Gas Co., Ltd. Joaloka moetsi ea ka sehloohong, mofani oa thepa le fektheri Chaena, re motlotlo ho fana ka theknoloji ena e tsoetseng pele bakeng sa karohano ea khase le ho hloekisa. Tsamaiso ea rona ea VPSA e sebelisa molao-motheo oa adsorption ho hlahisa likhase tse hloekileng tse kang naetrojene le oksijene. Ka ho sebelisa lits'ebetso tsa vacuum le khatello ea khatello, e arola ka katleho likarolo tse fapaneng le motsoako oa khase, e fana ka tharollo e theko e boima le e sebetsang hantle bakeng sa lits'ebetso tse fapaneng tsa indasteri. Shanghai Lianfeng Gas Co., Ltd., re ikemiselitse ho fana ka lihlahisoa tse tšepahalang le tse tsoetseng pele ho fihlela litlhoko tse fapaneng tsa bareki ba rona. Ka boiphihlelo le boiphihlelo ba lilemo tsa theknoloji ea khase, sistimi ea rona ea VPSA e etselitsoe ho ntlafatsa ts'ebetso le tlhahiso ha e ntse e netefatsa ts'ebetso e phahameng le tšusumetso e fokolang ea tikoloho. Khetha tsamaiso ea rona ea VPSA bakeng sa karohano e phahameng ea khase le tlhoekiso, 'me u fumane boleng le bokhabane boo Shanghai Lianfeng Gas Co., Ltd. e tsejoang ka bona. Ikopanye le rona kajeno ho ithuta haholoanyane ka theknoloji ea rona ea VPSA le hore na e ka tsoela khoebo ea hau molemo joang.