Shanghai Lianfeng Gas Co., Ltd. e etella pele China Vpsa O2 Plant Manufacturer, mofani oa thepa le feme. Limela tsa rona tsa Vpsa O2 li sebelisa ts'ebetso ea Vacuum Pressure Swing Adsorption (VPSA) ho arola oksijene hantle moeeng, ho fana ka mohloli o ka tšeptjoang le o theko e boima oa oksijene e hloekileng bakeng sa lits'ebetso tse fapaneng tsa indasteri. Joaloka moetsi, mofani oa thepa, le feme e tšepahalang Chaena, re motlotlo ka ho rala le ho hlahisa limela tsa Vpsa O2 tse finyellang litekanyetso tsa boleng bo phahameng ka ho fetisisa. Theknoloji ea rona e tsoetseng pele le sehlopha se nang le phihlelo se netefatsa hore limela tsa rona li sebetsa hantle, ha li hlokomeloe ka nako e telele, 'me li na le nako e telele ea tšebeletso. Re tsepamisitse maikutlo ho khotsofalo ea bareki, re fana ka litharollo tse ikhethileng ho fihlela litlhoko tse khethehileng tsa tlhahiso ea oksijene. Hore na o indastering ea meriana, ea lik'hemik'hale, ea metallurgic kapa tse ling, limela tsa rona tsa Vpsa O2 li etselitsoe ho fana ka phepelo e tsitsitseng ea oksijene ho ts'ehetsa ts'ebetso ea hau. Ikopanye le rona kajeno ho ithuta haholoanyane ka limela tsa rona tsa Vpsa O2 le hore na li ka tsoela khoebo ea hau molemo joang.