Kev lag luam kev tsim kho: Siv rau cov ntaub thaiv phab ntsa, qhov rooj thiab qhov rais thav duab, ceilings, partitions, thiab lwm yam.
Machinery thiab Cov Khoom Siv: Siv rau cov khoom siv thav duab, kev taw qhia rails, tiv thaiv npog, thiab lwm yam.
Cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob: Siv rau cov radiators, chassis, brackets, thiab lwm yam.
Kev thauj mus los: Siv rau qhov chaw thiab cov khoom siv hauv tsheb, tsheb ciav hlau, nkoj, thiab lwm yam tsheb thauj mus los.
