| Hom | Hom | Hom | Siv tau |
| Sjec | 17 txuas/19 txuas/24 txuas/32 txuas | PA6.6-30GF | Sjec escalator |
Yuav kom ntseeg tau tias cov saw hlau ua haujlwm li qub, yuav tsum tau saib xyuas thiab saib xyuas tas li. Qhov no suav nrog kev muab roj rau cov saw hlau raws sijhawm kom txo qhov kev sib txhuam thiab kev hnav. Koj kuj yuav tsum tau xyuas qhov nruj ntawm cov saw hlau kom paub tseeb tias nws nyob hauv qhov ntau thiab tsawg tsim nyog. Xyuas cov saw hlau kom tsis tu ncua seb puas hnav thiab hloov pauv raws li qhov tsim nyog.