Kev faib tawm los ntawm substrate: Vim muaj cov ntaub ntawv sib txawv ntawm cov khoom siv, cov npe ntawm cov khoom muaj raws li nram no: paj rwb tua hluav taws, pam asbestos daim npog, fiberglass hluav taws daim pam, muaj ntsej muag silicon npog, roj fiber ntau daim npog ntsej muag
Muab faib tawm los ntawm kev siv: tsev pam vov tsev, muaj hluav taws kub poom,
Nws yog ib qho chaw zoo thiab zoo tshaj txheej txheej rau cov neeg thiab cov khoom uas yuav tsum tau ceev cia ntawm lub cev qhov chaw ntawm lub tshav kub, thiab nws yooj yim heev los qhwv cov khoom tsis sib xws, kev tua hluav taws yooj yim rau cov tuam txhab, khw, nkoj, tsheb, thiab pej xeem vaj tse. Nws yog tshwj xeeb yog tsim rau cov chav ua noj hauv tsev, cov chaw ntiav pw, cov chaw ua si, cov chaw nres tsheb roj thiab lwm qhov chaw uas nws yooj yim mus tuav qhov hluav taws kub, los tiv thaiv kev sib kis ntawm hluav taws.
Nws yog qhov zoo tshaj plaws thiab zoo tshaj plaws txheej txheej tiv thaiv rau tib neeg thiab tej khoom uas yuav tsum tau ceev cia ntawm lub cev qhov chaw ntawm lub cev, thiab nws yooj yim rau qhwv cov khoom uas tsis sib luag.
