... 1.Material:stainless steel/iron/aluminum, 2.CNC Usage of perforated sheets : 1.The environmental noise shelters in the public ... , subway, and so on); the acoustic tile in the building walls, generator room, factories and other noise places; 2.The ... and covering, compote of the kitchen;7.The wire-sheet shelf, decorative distribution desk of the supermarkets; Perforated sheets from 20 years factory