Lub ntsiab nta yog raws li nram no:
1. Cov qauv yooj yim, yooj yim rau kev sib sau thiab disassemble, lub neej ntev.
2. Kev cuam tshuam ntau dua thiab nrawm dua drilling.
3. Tsawg cua noj thiab txo cov roj noj. Ib lub qhov tuaj yeem drilled ntawm daim tshev valve los muab kev txiav tawm kom zoo dua.
4. Tshwj xeeb tshaj yog tsim rau quarrying.
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Peb suav koj tus kheej
Peb siv cov ncuav qab zib los txhim kho koj txoj kev nrhiav tau, pabcuam cov kev tshaj tawm lossis cov ntsiab lus, thiab tshuaj xyuas peb lub tsheb. Los ntawm txhaj "Txais txhua yam", koj pom zoo rau peb siv cov ncuav qab zib.