power-supply filter shell 1.material:copper,iron,aluminium,stainless steel,copper alloy 2specification:36*27.. 3surface power-supply filter shell1.material:copper,iron,aluminium,stainless steel,copper alloy 2specification:55*22 36*27 36*22 20*20 ..3surface treat:electroplate, polishing,sand blast4.delivery port:Tianjin5note: any sizes and types are available power-supply filter shell