Cov qhov rooj hluav taws steel muaj lub suab rwb thaiv tsev zoo thiab thermal rwb thaiv tsev. Hlau qhov rooj hluav taws tuaj yeem txuag hluav taws xob, hluav taws xob thiab cua sov.

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coj mus muag thaum muaj xwm ceev hluav taws tawm qhov rooj nrog laub bar,Thaum muaj xwm ceev hluav taws kub tawm qhov rooj nrog thawb bar,hluav taws kub nyob tsev so chav nkag qhov rooj nrog ncej, hluav taws qhov rooj nrog laub bar,steel hluav taws qhov rooj nrog thawb bar,hluav taws pov thawj qhov rooj nrog laub bar,coj mus muag thaum muaj xwm ceev hluav taws tawm qhov rooj nrog laub bar,steel hluav taws qhov rooj nrog panic thawb bar,steel hluav taws qhov rooj nrog thawb bar,Thaum muaj xwm ceev hluav taws kub tawm qhov rooj nrog thawb bar,ob chav hluav taws qhov rooj nrog laub bar,coj mus muag thaum muaj xwm ceev hluav taws tawm qhov rooj nrog laub bar,60 feeb hluav taws qhov rooj,steel hluav taws qhov rooj nrog thawb bar,60 min qhov rooj hluav taws,Thaum muaj xwm ceev hluav taws kub tawm qhov rooj nrog thawb bar