Hoobkas nqi pem teb pobzeb spacer raimondi pobzeb leveling system
| Vim li cas thiaj xaiv peb |
| 1.Peb yog cov chaw tsim khoom thiab muaj tus nqi zoo dua. |
| 2.Ib pawg kws tshaj lij yuav teb koj cov lus nug txhua lub sijhawm. |
| 3. Muab cov qauv dawb. |
| 4.Ntau, thov saib. |
