MATERIAL:galvanized plates,cold plates,stainless steel plates,aluminium plates,aluminium magnesium alloy plates,etc. HOLE SHAPES:long holes,round holes,triangle holes,lightly pull scale holes,other pull wire netting,etc. USES:on the filtration of auto gas engine;the classification and filtration of mine,cereals and grains;indoor sound insulation,ventilation of grain depot,etc.