Perforated Metal Sheet Hole:round hole,square hole,etc. Quality Certification:ISO9001:2000 Metal width:0.5m-3m Factory Perforated Metal SheetPerforated metal has a greater, ... ventilation,sorting tables, acoustic panels and anti slip flooring.Expanded metal sheet, perforated mesh,etched mesh,punch mesh.Any shape Perforated ... mesh(by Chemical Erode)Punch Hole Mesh Abnormity Perforated Metal Sheet