Lub qhov rooj hluav taws kub hlau yog ua los ntawm lub qhov rooj thav duab, qhov rooj thiab lub qhov rooj vaj huam sib luag ua los ntawm cov khoom siv hlau. Hlau qhov rooj qhov rooj kiv cua yog ntim nrog cov khoom, ntim nrog tsis muaj teeb meem rau tib neeg lub cev hluav taws kub rwb thaiv tsev khoom.

kev ruaj ntseg rooj vag 28 nti,hluav taws kub ntsuas qhov rooj kick phaj,subway kev nyab xeeb qhov rooj, kev ruaj ntseg qhov rooj x,

hluav taws kub resistant qhov rooj manufacturers,kev ruaj ntseg rooj vag 28 nti,ob chav steel ruaj ntseg qhov rooj nrog kho vajtse, duab ntawm ntoo kev ruaj ntseg qhov rooj rau flats,subway kev nyab xeeb qhov rooj, kev ruaj ntseg qhov rooj qhov ntev, kev ruaj ntseg qhov rooj yees duab,kev ruaj ntseg qhov rooj x,hluav taws kub ntsuas qhov rooj 90 feeb, labeled vaj huam sib luag qhov rooj,

ntoo fireproof qhov rooj,kev ruaj ntseg rooj vag 28 nti,siv qhov rooj thaum muaj xwm ceev, hluav taws kub ntsuas qhov rooj ul, hluav taws kub ntsuas qhov rooj nyob