Galvanized steel yeeb nkab ua tshuab hauv ib lub zeb
Niaj hnub no, galvanized steel kav muaj kev lag luam loj muag txhua xyoo hauv kev lag luam steel. Nyob rau hauv kev pom ntawm kev tsim technology, galvanized yeeb nkab tau muab faib ua ob hom: electro galvanized yeeb nkab thiab kub dip galvanized yeeb nkab. Hauv lub neej, tib neeg feem ntau siv ...
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