Lub qhov rooj hluav taws steel txais yuav lub qhov rooj sab laug ntawm cov ntawv txias-dov steel, lub qhov rooj nplooj ncej thiab lub qhov rooj nplooj nplooj. Lub qhov rooj hluav taws steel muaj lub zog muaj zog, zoo nkauj tsos, lub suab nqus thiab rwb thaiv tsev kub, thiab muaj ntau yam kev siv.

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