Sezvo mamiriro edenda achiwedzera, kudiwa kweokisijeni concentrator kuri kuramba kuchikura.Zvakangodaro, ruzhinji rwevagadziri veokisijeni concentrator vanga vasina simba, izvo zvinokonzeresa kushomeka kwakanyanya kweokisijeni.Saka, zvipatara zvinofanirwa ...
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