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. |