... SpecificationPVC plastic corrugated sheet 1050 trapezoid Thickness: 1.2mm, 1.5mm,1.8mm, 2.0mm, 2.5mm , ... expand with heat and contract with cold.Lightness The maximum value of 1.00mm thickness plastic ... is a kind of flame retardant material, with the Refractoriness level reaching level B1.Good ... and 1/2000 of color steel tiles with 0.05mm thickness.Resistance Against LashesUnder the normal temperature ( ...