Raws li cov khoom siv, channel steel yog dav siv nyob rau hauv engineering tej yaam num vim nws durability, yooj, thiab nqi-zoo.Nws muab kev ruaj ntseg, sib xws, thiab lub zog rau cov qauv thaum tseem tso cai rau cov neeg tsim kho kom yooj yim hloov lossis nthuav lawv cov qauv.Channel steel yog ib hom ...
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