... light,sound abatement,abrasion resisrance. Material: stainless steel perforated metal sheet, Carbon steel, Galvanized plate, Aluminum ... CNC Perforating Machine and Etch Tiny Machine Application: Perforated material is widely use as agriculture equipment, audio ... noise control, pharmaceutical, filtration, etc. Delivery: The perforated metal sheets are delivered by EMS, express company, the truck, ...