Tsuas yog ib qho kev tawm xwm txheej ceev tau teeb tsa hauv txhua qhov kev faib ntawm cov tsev siab. Txij li cov qhov rooj hluav taws tsuas tuaj yeem qhib rau hauv ib qho kev taw qhia, yog tias ob qhov chaw nyob ib sab tsuas muaj ib qho kev tawm thaum muaj xwm txheej ceev, ob lub qhov rooj hluav taws yuav tsum tau muab tso rau ntawm qhov hluav taws kub thiab qhib rau ob tog raws li qhov xav tau ntawm kev khiav tawm ntawm ob qhov kev faib tawm.

niaj hnub sab hauv hluav taws qhov rooj,hluav taws kub ntsuas qhov rooj kick phaj,33 nti hluav taws qhov rooj,3 teev hluav taws ,

hluav taws kub resistant qhov rooj manufacturers,niaj hnub sab hauv hluav taws qhov rooj,ob chav steel kev ruaj ntseg qhov rooj nrog kho vajtse, duab ntawm ntoo kev ruaj ntseg qhov rooj rau flats, ruaj ntseg,ob chav steel ruaj ntseg qhov rooj nrog kho vajtse, duab ntawm ntoo kev ruaj ntseg qhov rooj rau flats, ruaj ntseg qhov rooj 820,33 nti hluav taws qhov rooj,kev nyab xeeb qhov rooj yees duab, 9 ko taw qhov rooj sab hauv,3 teev hluav taws ,labeled vaj huam sib luag qhov rooj,

ntoo fireproof doorshollow,niaj hnub sab hauv hluav taws qhov rooj,siv qhov rooj thaum muaj xwm ceev,33 nti hluav taws qhov rooj,hluav taws nyob qhov rooj ul,3 teev hluav taws , hluav taws kub ntsuas qhov rooj nyob,