Dab tsi yog lub barn qhov rooj xav tau rau cov kho vajtse?
Qhov chaw loj ntawm barn qhov chaw kho vajtse yog cov ciav hlau dai rau ntawm lub qhov rooj ntoo, nws tuaj yeem txhawb nqa lub qhov rooj zoo nkauj dai ntawm dai qhov zoo yog qhov tseem ceeb tshaj li ntoo Qhov rooj . Lub tsev lub qhov rooj tsis zoo rau cov khoom siv hluav taws xob muaj txiaj ntsig thiab muaj kev tiv thaiv corrosier thiab muaj kev tiv thaiv corrosi tau ua tiav 100, {{{{{}}}}} sij hawm slides uas yog cov khoom siv siab heev thiab qaug zog thiab Burr ntawm cov khoom .
Thov koj xav tiv tauj kuv yog tias koj muaj lus nug . Peb yuav muab cov khoom lag luam tshaj lij thiab pab koj khaws cov khoom txaus siab tshaj plaws.
