| Hom | Hom | Siv tau |
| OTIS | YZ-TS 177-201/QM177GY1/XAA177HP1 | Otis escalator |
TS177-201 thiab QM177GY1 muaj ntau, thov mus saib cov qauv kom paub meej. QM177GY1 yog tus qauv pem hauv ntej, XAA177HP1 thiab XAA177HP2 yog tus lej sab, uas yog cov khoom siv tiag tiag.