... board Material qualitative: steel, iron, aluminum, copper, stainless steel plate, sheet metal and non-metallic materialSpecial sex: the net surface level off ... , smooth, beautiful, strong and durableRules g: (1 x20m plate, plate 1 x2m, can also according to customer need to order ... , quieter, grain depot, ventilated, mechanical protection. Stainless steel. Galvanized sheet round hole nets