Kev taw qhia kev loj hlob: kev txhim kho thiab tsim cov khoom hauv qab rau cov khoom nruab nrab thiab loj excavators.
Kev tsim kho kom pom tseeb: cog lus rau kev tsim khoom nruab nrab thiab loj excavator undercarriage qhov chaw, thiab tom qab ntawd peb yuav txuas ntxiv txhim kho lub chassis ntawm nruab nrab thiab loj excavator qauv, txhim kho thev naus laus zis, 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 ruaj khov thiab tsim nyog tus nqi nruab nrab thiab loj excavator undercarriage qhov chaw.
Nyob rau hauv lub neej yav tom ntej, Heli tseem yuav ua hauj lwm nyuaj los txhim kho, tsom mus rau qhov chaw undercarriage ntawm nruab nrab thiab loj excavators --- "ua hauv Heli, loj undercarriage parts".