Shanghai Lianfeng Gas Co., Ltd. waa saaraha ugu horreeya, alaab-qeybiyaha, iyo warshadda unugyada kala-soocidda hawada ee Shiinaha. Unugyada kala-soocidda hawadeena waxaa loogu talagalay inay kala soocaan hawada atmospheric qaybaheeda aasaasiga ah, inta badan nitrogen iyo ogsijiinta, by distillation cryogenic. Annaga oo khibrad iyo waayo-aragnimo u leh warshadaha, waxaa naga go'an inaan bixinno unugyo kala-soocidda hawada oo tayo sare leh oo la isku halleyn karo oo loo isticmaalo warshado kala duwan oo ay ku jiraan kiimikaad, kiimikaad batroolka, birta, iyo daryeelka caafimaadka. Badeecadahayaga waxaa lagu soo saaray iyadoo la adeegsanayo tignoolajiyada horumarsan iyo tillaabooyinka xakamaynta tayada adag si loo hubiyo waxqabadka ugu wanaagsan iyo hufnaanta. Waxaan bixinaa xalal habaysan si loo daboolo shuruudaha gaarka ah ee macaamiisheena, iyo kooxdayada xirfadlayaasha ah ee u heellan waxay had iyo jeer diyaar u yihiin inay bixiyaan taageero iyo adeeg aad u fiican. Dooro Shanghai Lianfeng Gas Co., Ltd. sidii lammaanahaaga aad ku kalsoon tahay ee cutubyada kala soocida hawada ugu sarreeya ee Shiinaha.