1. An electronic card tray comprising:an insulative base portion essentially extending in a horizontal plane defined by a front-to-back direction and a transverse direction perpendicular to each other, said base portion forming frame portion with a receiving cavity therein for receiving an electronic card;
a metallic operating portion made by a die-casting process and integrally formed and located at a front end of the base portion via an insert-molding process so as to have the base portion protectively grasping a portion of the operating portion circumferentially, wherein
said operating portion defines along the transverse direction a transverse dimension larger than another transverse dimension defined by the base portion in said transverse direction, and further defines, along a vertical direction perpendicular to said horizontal plane, a vertical dimension larger than another vertical dimension defined by the base portion; and
a metallic shell made from sheet metal and mechanically secured to the operating portion before the base portion is applied thereon, wherein
said shell includes a plurality of bending tabs grasping the operating portion for securing thereto, and said bending tabs are sandwiched between the base portion and the operating portion.