... power 1.material:copper,iron,aluminium,copper alloy 2.High shielding effectiveness, high heat dissipatio metal shell for Module ... , lathes,Milling machine,Grinder,Radial drilling machine and so onAdvanced machines guarantee the products to be precise ... ,cutting,punching QC,packing and deliveryAll the material and surface treatment conform to ROHS environmental requirements metal shell for power module