... ≤ 0.025 we offer 100mesh, 200mesh, 300mesh, 400 mesh,500 mesh and so on.PACKING AND STORAGE Iron barrel or plastic ... and damp.Store in dry and ventilating place.APPLICATION:Widely used in manufacturing porous bronze bearings self-lubricated, structural parts ... electric brushes, diamond grinding wheels, bronze filters, and also used as the additives of rubbers and plastics, and in the production ...