1. Lub trolley siv txoj kev / kev tsheb ciav hlau series tsim, uas tuaj yeem rov qab siv tau ntau qhov tunnels los tiv thaiv cov khoom pov tseg.
2. Cov paving dej tsis zoo siv cov chaw taws teeb tswj kev ua haujlwm kom txo qis kev siv zog ntawm cov neeg ua haujlwm thiab txo cov neeg ua haujlwm.
3. Lub caj npab ua haujlwm tuaj yeem tig tau ywj pheej thiab nthuav dav, kev ua haujlwm yog hloov tau, thiab nws tuaj yeem hloov mus rau qhov sib txawv qhov seem
4. Cov txheej txheem taug kev tuaj yeem nruab nrog hom taug kev lossis hom log tsheb, tsis muaj nteg lem, thiab tuaj yeem txav mus sai sai rau qhov chaw tsim kho, txo lub sijhawm npaj kev tsim kho.
5. Cov khoom siv sib cais hom steel bar cia tig thiab xa khoom, nrog steel bar noj, tsis siv neeg tig thiab longitudinal txav chaw muaj nuj nqi, tsis tas yuav manually nqa lub steel bar, zoo heev txo lub zog ntawm cov neeg ua haujlwm thiab txo cov neeg ua haujlwm.