Kev taw qhia kev loj hlob: kev tsim kho thiab kev tsim khoom ntawm cov khoom siv hauv qab rau cov excavators nruab nrab thiab loj.
Lub hom phiaj kev txhim kho: Cog lus rau kev tsim cov khoom siv hauv qab ntawm lub tshuab khawb av nruab nrab thiab loj, thiab tom qab ntawd peb yuav txuas ntxiv txhim kho cov khoom siv chassis ntawm cov qauv khawb av nruab nrab thiab loj, txhim kho cov thev naus laus zis, ua kom zoo meej cov ntsiab lus, thiab ua tau raws li qhov xav tau ntawm cov neeg siv khoom sib txawv. Txhawm rau muab cov neeg siv khoom nrog cov khoom zoo ruaj khov thiab tus nqi tsim nyog rau cov khoom siv hauv qab ntawm lub tshuab khawb av nruab nrab thiab loj.
Yav tom ntej, Heli yuav txuas ntxiv ua haujlwm hnyav los tsim kho, tsom mus rau cov khoom hauv qab ntawm cov excavators nruab nrab thiab loj --- "ua nyob rau hauv Heli, cov khoom hauv qab loj".