... . 3-100mm Thinkness TOP level perforated meshpunching hole shapes: rectangular, square, circular, angular, scale-shaped Opening Dia. : 0. ... plate, zinc plate, aluminum molded plate etc.Opening shapes: rectangular, square, circular, angular, scale-shaped etc, Opening Dia. ... , zinc plate, aluminum molded plate etc.Opening shapes: rectangular, square, circular, angular, scale-shaped etc, Opening Dia. ...