Cov khoom siv hlau hluav taws xob hlau tiv thaiv, kuj paub txog cov ntawv tawm tsam tiv thaiv hlau, yog ua los ntawm cov khoom kub kub, uas tuaj yeem siv rau cov khoom lag luam thiab tuaj yeem ua tau zoo tshaj.
Lus
● Kev tshuaj xyuas cov khoom siv hluav taws xob qhib loj.
● Kev tshuaj xyuas tus ncej loj pylon.
● Kev tshuaj xyuas cov nqa nruab nrab thiab loj.
● Cov hlab ntsha loj.
●
Factory khoom tswj.
●
Cov khoom taug qab rau ntau yam khoom siv hluav taws xob hauv tsev.