Kev txhawb zog zog: hmoov-coated steel txhais ceg thiab cov xauv lub taub hau sib pab pab kom kho lub rooj thaum twg thiab txhua qhov chaw. Tsis tas li ntawd, peb cov ceg txhais ceg kuj tau nruab nrog cov ntaub npog sab hauv qab, uas tsis tuaj yeem tiv thaiv koj lub tsev nkaus xwb tab sis kuj tiv thaiv kev swb
