G9138F yog ib qho kev kub ceev, kev ua haujlwm siab, siab precision thiab ntau yam khoom tsim los ntawm SDLG tom qab tag nrho cov kev tshawb fawb ntawm kev ua lag luam xav tau, uas tuaj yeem ua tiav hauv av leveling thiab trenching, nqes hav scraping, bulldozing, daus paug, loosing, compaction, khoom faib, sib tov. , thiab lwm yam, thiab yog dav siv nyob rau hauv txoj kev loj, tshav dav hlau, tiv thaiv engineering, mine kev tsim kho, kev tsim kho, kev txuag dej, kev txhim kho thaj av thiab lwm yam kev tsim kho.