Me me me carbon steel u channel xa - muaj koob muaj npe pawg

Niaj hnub no, cov pa roj carbon hlau U channel tau xa tawm.

Peb tuaj yeem ua kom peb cov neeg siv khoom tau txais cov khoom siv sijhawm nyob rau lub sijhawm siv sijhawm. Tsis muaj teeb meem li cas lig, peb yuav tsum xa cov khoom siv sijhawm. Yog tias koj xav nrhiav tus muab kev pabcuam muaj zog, thov hu rau peb.