Galvanized vov tsev ntsia hlau umbrella taub hau

Lus piav qhia luv luv:

Cov ntsia hlau Galvanized vov tsev ntsia hlau kaus lub taub hau Galvanized, kub-dipped galvanized vov tsev rau tes, du shank thiab twisted shank yog dav haum rau cov tsev nyob rau hauv cov cheeb tsam sov thiab lub installation ntawm vov tsev ntawv lawv yog cov zoo thiab check.