Housing, handheld device, and manufacturing method of housing

A manufacturing method of a housing, comprising:

• providing a body, wherein the body has a through hole, an appearance surface and an inner surface opposite to the appearance surface, and the through hole extends from the appearance surface to the inner surface;
• electroplating a metal antenna layer formed on the appearance surface of the body, wherein the metal antenna layer covers the through hole, an edge of the metal antenna layer is connected to the appearance surface seamlessly, and a surface of the metal antenna layer is at least partially exposed by the body;
• and
• disposing a conductive element in the through hole and directly contacting the metal antenna layer, wherein the conductive element is adapted to transmit signals received by the metal antenna layer.