Re hlahisa N2 Psa, sehlahisoa sa phetoho se tsoang Shanghai Lianfeng Gas Co., Ltd., moetsi ea ka sehloohong, mofani oa thepa le feme China. N2 Psa ke sistimi e tsoetseng pele ea tlhahiso ea naetrojene e sebelisang theknoloji ea "press swing adsorption" (PSA) ho hlahisa khase ea naetrojene e hloekileng setšeng. Sehlahisoa sena sa boqapi se etselitsoe ho fihlela litlhoko tse ikhethileng tsa liindasteri tse fapaneng, ho kenyeletsoa lisebelisoa tsa elektroniki, lijo le lino, meriana, le tse ling. Ka N2 Psa, likhoebo li ka laola phepelo ea tsona ea naetrojene, tsa felisa tlhoko ea lisilindara tsa khale tsa khase, le ho fokotsa litšenyehelo tse amanang le khase ea naetrojene. Sistimi ena ha e boloke litšenyehelo feela empa hape e ka tšeptjoa, e sebetsa hantle, ebile ha e na tikoloho. Ho bonolo ho kenya le ho sebetsa, ho e etsa tharollo e nepahetseng bakeng sa likhoebo tse batlang ho ntlafatsa tlhahiso ea tsona le ntlha ea bohlokoa. Shanghai Lianfeng Gas Co., Ltd. e na le botumo bo matla ba ho fana ka lihlahisoa le tharollo ea khase ea boleng bo holimo, 'me N2 Psa le eona e joalo. Tšepa boitsebelo ba moetsi ea etelletseng pele oa khase Chaena 'me u tsetele ho N2 Psa bakeng sa litlhoko tsohle tsa hau tsa tlhahiso ea naetrojene.