Dab tsi yuav tsum tau them sai sai rau thaum muaj kev ua si ntawm cov khoom cua turf
1. Nws tsis raug tso cai rau txav ntawm kev nyom hla ntawm khau tawv uas muaj ntsis ntse dhau lossis ntev dhau lawm. Vim tias qee cov khau khaus khau tuaj yeem ua rau lub ntsej muag ntawm cov khoom nyom thiab ua rau puas tsuaj, txawm tias muaj kev cuam tshuam loj heev.
2. Lub tshav puam kis las yuav tsum tau sau nrog cov xuab zeb quartz, thiab cov xuab zeb puv yuav tsum tiaj, yog li txhawm rau kom muaj kev sib txhuam zoo dua, thiab xyuas kom lub thaj thiab cov kev coj ua ntawm lub pob thaum tib neeg ua si pob.
3.Txhob foob pob hluav taws. Txij li cov nyom dag ua los ntawm nylon, polyethylene, thiab lwm yam, cov chaw tsim khoom ntawm cov nyom dag ceeb toom txhua tus kom txwv tsis pub tua hluav taws thaum ua haujlwm los tiv thaiv qhov quav ntawm cov nyom thiab ua kom muaj hluav taws.
3.Txhob foob pob hluav taws. Txij li cov nyom dag ua los ntawm nylon, polyethylene, thiab lwm yam, cov chaw tsim khoom ntawm cov nyom dag ceeb toom txhua tus kom txwv tsis pub tua hluav taws thaum ua haujlwm los tiv thaiv qhov quav ntawm cov nyom thiab ua kom muaj hluav taws.
