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Kev ua tau zoo ntawm steel qauv
Kev ua tau zoo ntawm cov qauv hlau Thermal rwb thaiv tsev thiab lub zog txuag tshuab Lub teeb steel qauv Txhawm rau kom ntseeg tau cov thermal rwb thaiv tsev, cov khoom siv thermal rwb thaiv tsev siv rau sab nrauv phab ntsa thiab ru tsev ntawm cov tsev tuaj yeem ua tau ...Nyeem ntxiv
Nyob zoo, tuaj nrog peb cov khoom!
