Sterilisation, umwuka mwiza, kuvanaho formaldehyde, kugenzura-igihe, kugihe cyihuta, gushungura PM2.5
1.yungurura2.yungurura3.yungurura4.toluene5.amasegonda ya kabiri-akayunguruzo6.yungurura7.yungurura8.yungurura