... /Punching hole mesh Stainless Steel,Aluminium,Galvanized metal,copper Round,square,hexagon,oblong,etc ISO9001 Perforated sheet/ Punching hole mesh manufactured ... carbon steel sheetAluminum plateAluminum Zinc Steel sheetHole Shape:Round, Rectangular, Square, Triangle, Oval, Oblong, Slot hole, Pentagon, Hexagon, other kind of hole ...