Lub qhov rooj hluav taws steel muaj ntau hom kev ua haujlwm sib txawv, tab sis kuj muaj ntau yam kev ua haujlwm, tuaj yeem kaw tau zoo lossis cais tawm. Thaum tshav kub kub, suab, plua plav thiab tub sab, thiab tuaj yeem hloov kho rau ntau qhov chaw rau kev teeb tsa thiab siv. Steel qhov rooj hluav taws tuaj yeem ua kom ntev rau tus neeg siv lub sijhawm siv, thiab ua tau raws li qhov xav tau ntawm lub sijhawm ntev hauv kev siv tiag tiag.

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