Hlau hluav taws qhov rooj ntawm cov qib sib txawv tuaj yeem siv rau ntau qhov chaw. Ntau qhov zoo ntawm cov qhov rooj hluav taws steel ua rau lawv tuav lub lag luam loj hauv cov tsev pej xeem.

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3hr hluav taws ntsuas qhov rooj,kev lag luam sab hauv hluav taws qhov rooj,20 feeb hluav taws ntsuas qhov rooj 36 x 80,sab hauv 30 feeb hluav taws qhov rooj,garage hluav taws qhov rooj lowes,sab hauv 30 feeb hluav taws qhov rooj,zawv zawg qhov rooj hluav taws sab hauv,3hr hluav taws ntsuas qhov rooj,ul hluav taws ntsuas qhov rooj,kev lag luam sab hauv hluav taws qhov rooj,34 × 80 hluav taws kub ntsuas qhov rooj, hluav taws kub retardant chaw nres tsheb qhov rooj,3hr hluav taws ntsuas qhov rooj,qhov rooj hluav taws tsis kam ntsuas,kev lag luam sab hauv hluav taws qhov rooj,hluav taws qhov rooj nrog saib vaj huam sib luag,sab hauv 30 feeb hluav taws qhov rooj