... of steel sheet, or in bundle.4. Features: light-weight, high-strength, erosion-resistant, quakeproof, easy-installation, colorful, anti-rust, long ... treatmentToleranceWidth: +/-0.02mmThickness:+/-0.02mCertificationISO 9001-2008, CEPacking detailwaterproof paper, galvanized steel strip or wooden pallet packedRoofing sheet corrugated galvanized zinc roofing sheet