Hlau hluav taws kub drated qhov rooj tuaj yeem nkag tau nrog peb sab steel thav duab Knock cia tus ncej lossis welded thav duab. Feem ntau yog qhov haujlwm tau thov rau plaub sab thav ntawv suav nrog lub ntsuas pib.
Feem ntau Asico Qhov Rooj muaj ob yam xwm txheej rau steel hluav taws nyob qhov rooj.
--Txhob tsis muaj steel muaj kauj
--Aluminium tus Harbor
