Tawg -} ntawv pov thawj tau siv dav hauv cov xwm txheej uas yuav tsum muaj hluav taws thiab tawg kev tiv thaiv. Noj tsis yog-} flammable hnav - tiv taus nyuaj ua piv txwv. Nws muaj cov tsos ntawm grey hmoov thiab cov hom yog dechang. Nws muaj hluav taws zoo heev thiab tawg rau ntau yam kev lag luam thiab cov khoom lag luam hauv av {{ Nws cov yam ntxwv yog kev tsim kho yooj yim thiab tuaj yeem txau rau ntawm thaj chaw loj kom tawv nqaij {{8} {resistant hauv av. Muaj kev kho xuab zeb uas muaj cov hnav - Tshem tawm cov av hardened, tsis tsuas yog tias, tab sis kuj tseem ove} zoo li qub thiab tsis} nplej. Scattering hauv av tuaj yeem tiv thaiv kev kis hluav taws thiab txo qhov kev pheej hmoo ntawm kev phom sij. Nws tuaj yeem siv rau hauv cov chaw muaj txuj ci xws li cov chaw ua tub rog tub rog, chaw ua haujlwm ntawm chaw ua haujlwm, thiab cov khoom siv hauv av tshwj xeeb. Ntau yam kev lag luam ntau vaj tse puas yuav xaiv hom hauv pem teb hnav - cov khoom tiv thaiv. Nws muaj cov nyhuv ntau heev, yog khawb - tsis kam, zoo nkauj, siv tau yooj yim thiab nrawm. Yog tias koj xav paub ntau ntxiv txog cov xwm txheej muaj feem xyuam nrog thiab yuav cov ntsiab lus ntawm kev tawg {{} Cov ntaub ntawv pov thawj, thov hu rau peb kom paub ntau ntxiv thiab cov lus qhia kev cai.
