Daim Tawv Nqaij Tu Pob Lub tswv yim ntawm kev rov ua dua tawv nqaij nyob rau hauv cov khoom siv tu tawv nqaij tshiab tshwm sim nrog lub xoom ntawm lub hnab ntim khoom siv rov ua dua tshiab, kev tiv thaiv ib puag ncig, thiab lub tswvyim hauv ib puag ncig. Los ntawm cov khoom lag luam ntawm 60-hnub khoom noj-qib pub ua lub neej nyob ntawm 30-hnub txhim kho tawv nqaij txheej txheem, 30 thiab 60 raug xaiv los ua lub cim pom cov cim ntawm cov khoom, thiab peb theem ntawm kev siv, 1,2, 3 nkag rau hauv lub zeem muag.