... stainless steel board, copper board and nickel board.2. Hole Plug Metal Mesh Characteristics: The surface is flat, smooth, beautiful, ... : It is formed by punching and pressing. 4. Hole Plug Metal Mesh Uses: Mining, medicine, food selection, indoor noise ... and grain storage ventilation, mechanical protection5. Hole patterns of Hole Plug Metal Mesh: Round, Rectangular hole, square, Triangle, Diamond, ...