Lub Hoobkas ua cov khoom lag luam them nqi pem teb kom zoo nkauj rau cov cuab yeej pem teb

Nta:
1. Nrog peb cov nplais qhov system leveling txiav theem Koj tuaj yeem kho kom ceev thiab tswj tau qhov tiaj tiaj ntawm nruab nrab ntawm cov nplais thiab cov nplais.
2. Tiv thaiv kev xa tawm hauv cov vuas lossis cov vuas luaj nrog cov nplais nplaum ua kom ruaj khov txheej txheem.
3. Kev lag luam yooj yooj yim siv, yooj yim siv.
4. Zoo heev txhim kho qhov nrawm ntawm paving vuas, thiab txo qhov teeb meem nyuaj ntawm paving vuas,
5. Pobzeb leveling ntaus ntawv (kho cov kab rov tav ntawm cov vuas thiab cov vuas)
6. Tom qab qhov kawg ntawm kev ua haujlwm, nrog koj ko taw ncaws tawm lossis nrog cov roj hmab roj hmab khob tawm ntawm txoj kab hla.
7. Cov ntaub thaiv npoo liab tom qab tshem tawm kuj tseem tuaj yeem siv rov qab.