metal shell forModule power 1.material:copper,iron,aluminium,copper alloy 2.High shielding effectiveness, high heat dissipatio metal shell for Module power1.material:copper,iron,aluminium,copper alloy2.High shielding effectiveness, high heat dissipation,3.completed kind4.high cost5.Metal Aluminium surface : no scratch, without finger mark6.surface treatment:Copper plating,nickel (electro)plating, ...