Shell structure and manufacturing method for shell structure of electronic device

A manufacturing method for shell structure of electronic device, comprising:

• providing a composite material layer, the composite material layer comprises a first material layer and a first layer comprising a core layer and a first bonding layer, wherein the first layer has a first surface and a second surface opposite to each other and the first material layer is located on the first surface and has a plurality of through-holes;
• and
• overlaying a plastic material on a surface of the first material layer and forming a plastic material layer on the first material layer by a plasticizing process, wherein the plasticized plastic material layer has a plurality of extending-portions adapted to be combined with the first layer and fix the plastic material layer and the composite material layer to each other.