Slotted-hole perforated metal is made of plain steel and aluminum, which has many kinds of surface treatments, such as electric galvanized, hot dipped galvanized, PVC coated, oxidation treatment, and so on. The specific applications include building facades, ceilings, stair handrails, protective fences and many decorative architectures. As a high quality supplier of slotted-hole perforated metal, we will try our best to meet all your requirements.