Cov lus piav qhia ntawm cov khoom siv: Cov ntaub nplaum nplaum nplaum no yog qhov loj thiab tuab txaus los tiv thaiv cov khoom tsis zoo xws li tshuab, cuab yeej, qoob loo, chiv, stacked lumber, cov tsev tsis tiav, npog cov khoom ntawm ntau hom tsheb thauj khoom ntawm ntau lwm yam khoom.