Hlau vov tsev ntawv - feem ntau yog ua los ntawm galvanized steel, aluminium, los yog zinc-coated steel - tau dhau los ua ib qho ntawm cov khoom siv vov tsev zoo tshaj plaws hauv kev tsim kho niaj hnub no. Lawv muab kev sib xyaw tshwj xeeb ntawm lub zog, kev siv hluav taws xob, thiab kev pom kev pom zoo uas ua rau lawv haum rau ntau lub tsev, los ntawm cov tsev nyob mus rau warehouses, factories, thiab cov chaw lag luam.
Nyeem ntxiv