... or polished,beautiful,light,sound abatement,abrasion resisrance. Material: stainless steel perforated metal sheet, Carbon steel, Galvanized ... -Mg. alloy plate, Nickel-plate, Fiber Glass, PVC plate, Composites. Hole shape: Round, Square, Slot, Triangle, Long round, ... CNC Perforating Machine and Etch Tiny Machine Application: Perforated material is widely use as agriculture equipment, audio, automotive & ...