Galvanized Steel Classification
Galvanized steel is a composite of steel and zinc. It combines the strengths of both materials. The Galvanized Steel Classification is mainly GI/GA/GL.
Aluzinc Sheet:Metal Roofing and Wall Better Choose
Aluzinc sheet is an ideal building materials as Roofing or Wall, whether renovated the house or construct new projects.It can be used for nearly 100 years.