Description of the products: Specification: 1.Basis weight: 100--280g/m? 2.Thinkness :0.35--1.2mm. 3.Air permeability:50--1000L/m?s. 4.Corrugated Depth:0.23mm. 5.Maximum Pore Size: 30--120 microns. 6.Plain paper and Corrugated paper according request. 7.Any size and any color. Packing: 1.Inner packing: plastic film. 2.Middle packing: kraft paper. 3.Outer packing: plastic film.