... perforated metal :Materials: stainless steel mesh, aluminum, copper, steel board, PVC filmType: long, round hole hole hole, ... steel nets, micro hole boards, sound-absorbing board, punching, porous plate, simple perforation plate, horn, speakers, mesh, filtering, and ... . Material: low carbon steel, stainless steel by plate, aluminum, copper, plastic, wood. Weave characteristics: stamping, According to ...