Lub tswb ceeb toom tiv thaiv tus kheej, Yog tias muaj kev phom sij lossis xwm txheej ceev, qhib lub qhov hloov thiab tam sim ntawd suab lub tswb nrov-decibel, cov lus ceeb toom thaum muaj xwm txheej ceev thiab hu rau koj tsev neeg, Feem ntau siv rau cov ntxhais, cov tub ntxhais kawm, cov neeg laus kho siab kom tau kev pab, zoo nkauj, yooj yim nqa.
Cov Haujlwm:
1. Rub tawm lub pin, nws yuav ceeb toom + lub teeb ci ntsa iab + cov lus qhia txog kev taug qab thaum muaj xwm txheej ceev + hu xov tooj thaum muaj xwm txheej ceev
2. Nias lub pob sos, cov lus ceeb toom thaum muaj xwm ceev + hu xov tooj thaum muaj xwm ceev
3. Lub roj teeb uas rov them tau nrog ib xyoos tos txais.
Lub sijhawm tshaj tawm: Plaub Hlis-18-2020