Cov ntaub pua rooj pobzeb thiab cov ntaub ntawv muaj ntau, muaj cov nplais liab, cov av nplaum, cov av nplaum, yog li cov pob zeb hlau nplaum, cov pob zeb dub, cov txiv ntoo vov tsev, cov nplais ntoo, slate nplais Vuas vov tsev, shrug dounding vov tsev, linoleum vov tsev, thiab ib txhia tau hloov cov vuas tshiab, thiab lwm yam vuas luaj 3.
Weiner Steel Pobzeb: Zoo nkauj, kev tsim kho ntev, kev tsim kho yooj yim, cov khoom siv tau muaj txiaj ntsig, kev siv zog ua haujlwm.
Asphalt vile: zoo nkauj lub neej, lub neej luv, kev tsim kho lub neej, tab sis cov khoom siv nyiaj txiag yog qhov siab, qis-qib kev tsim kho siv.
Askiv cov nplais liab: Kev tsim kho, yooj yim kom poob tawm, lub neej ntev, tab sis cov khoom siv dag zog yog qhov siab, qib siab kev siv.
