... 2 Anticorrosion 3 H beam C purlin, window, sandwich panel 4 ISO9001 1500sqm Fire-proof Large Span Steel Structure Plant I IntroductionCompared ... corrugated color steelSkylight panel is used to day lightingSteel plastic window and steel doorAccessories, such as tie bar, brace, screwsII ... shed, container house, prefabricated home, exhibition hall, etc. 1500sqm Fire-proof Large Span Steel Structure Plant