Lub nqa nqa ruaj yog ib qho khoom thauj ruaj khov uas nqa cov khoom ntawm ib qhov siab mus rau lwm qhov. Vim tias qhov hnyav thiab ntim ntawm cov khoom nws nqa, nws muaj kev nyab xeeb thiab ruaj khov, yog li lub lifting ruaj yog ib daim ntawv tshwj xeeb ntawm kev ua haujlwm huab cua lifting platform thiab yuav tsum tau muab cais ua hoisting machinery. Lub luag haujlwm tseem ceeb yog nqa cov khoom nce thiab nqis ntawm ntau cov plag tsev ua haujlwm. Cov khoom nqa nqa nqa nrog ntau yam kev siv yog tsuas yog siv rau kev thauj mus los ntawm cov khoom nruab nrab ntawm qhov siab sib txawv ntawm cov kab ntau lawm; upgrade.
Cov duab ntxaws
Kev txiav txim tiag
Cim npe nrov: scaffold nqa
