Kev npaj: Cov duab kos tau dhau los ntawm kev sib koom ua ke. Qhov chaw thiab qhov loj ntawm lub qhov rooj thiab qhov rais qhib yog ua raws li cov duab kos duab. Kev piav qhia tau ua raws li kev tsim kho.
Kev npaj cov khoom siv: Cov khoom siv ntau yam, hom, specification, loj, qhib kev taw qhia, installation txoj hauj lwm thiab kev tiv thaiv corrosion ntawm lub qhov rooj zawv zawg yuav tsum ua raws li cov qauv tsim. Cov khoom siv tseem ceeb thiab cov khoom siv: Ntau yam khoom siv me me xws li ntug strips, grooves, pulleys, thiab lwm yam yuav tsum ua tau raws li cov qauv tsim.
Kev khiav hauj lwm tej yam kev mob: Ua ntej installation, xyuas lub qhov rooj ncej thiab sash rau warping, tev xim, nyuaj puas, thiab lwm yam. Yog hais tias muaj, lawv yuav tsum tau dealt nrog.