... mesh:10mesh to 2400mesh material: stainless steel, copper, brass shape: square ,round, ring ect Heteng Metal Filter Equipment ... can choose polypropylene membrane filter, enhanced membrane, filter paper, filter cloth, dedicated local filtering film can be qualified ... Round shape ,diameter 44 to 600mm,toroidal shape inner diameter 18mm to 250mm, outer diameter 50-350mm,rectangular shapewidth ...