Steel Workshop with CE Easy to install wide span National class A EPS rock wool ,PU sandwich panel OEM ODM servic MaterialQ235B China Standard steelPurlinC or Z section steelBracecross support, angle brace, brace between purlin/column/beamBoltanchor,ordinary,high strenght boltRoof &Wallsandwich panel or steel color plateSheet0.5mm or 0.6mm galvanized sheetWindowPVC or aluminum alloy ...