... quality,RAL 3.ISO9001, ISO14001 4.Manufacture 1) PREPAINTED STEEL SHEET/ PPGI QualityQ/BQB 440-2003JIS G3312-1994EN 10326-2004ASTM A653 ... , Channel, Angle, H-Beam, C-Beam, Galvanized Steel Coil, Hot Rolled Steel Plate, Cold Rolled Steel Plate, Mild Steel Plate, Structure Steel, difference kind ...