Peb paub zoo tias yog ib qho ntawm cov ua centrifugal oxygen-nce tshuab manufacturers thiab lwm tus neeg nyob hauv Suav teb rau 30 xyoo. Txais tos kom yuav zoo centrifugal oxygen-nce tshuab ntawm tus nqi sib tw los ntawm peb lub hoobkas. Yog xav paub ntxiv, tiv tauj peb tam sim no.