cov neeg muas zaub yuav pre galvanized steel yeeb nkab, siv tsev cog khoom.

Tom qab pom cov khoom, cov neeg siv khoom txaus siab rau peb cov khoom.cov neeg muas zaub kuj yuav dub steel yeeb nkab thiab galvanized hlau.

Peb yeej xav ua phooj ywg zoo dua thiab tsim kom muaj kev sib koom tes ntev.