An gina Tashar Kula da Najasa ta gundumar Chengdu Pujiang a cikin 2018, kuma shukar ta sami ingantaccen tsarin kula da iskar oxygen.A cikin ramin oxidation na shuka, asalin hular kyalli na Hash II da aka shigo da su daga Amurka aka fara amfani da su.Koyaya, an gano a cikin ainihin kwatancen akan tabo cewa sakamakon auna narkar da mitar iskar oxygen ɗinmu daidai yake da na Hash.Yanzu hanyar mu mai kyalli ta narkar da mitar iskar oxygen an yi nasarar amfani da ita a cikin injin najasa.
