Manufacturing method for housing

A manufacturing method for a housing, comprising:

• providing a substrate, wherein the substrate comprises a metal member and a plastic member combined with the metal member, the substrate comprises an appearance surface, and the appearance surface extends from the metal member to the plastic member;
• cleaning the appearance surface, and performing surface treatment on the appearance surface to form an oxide film;
• forming a colored pattern on a heat-insulating film by using a color material;
• and
• placing the heat-insulating film on the appearance surface, and transferring the colored pattern to the appearance surface by dye sublimation,
• wherein a manufacturing method for the color material comprises:
• providing an organic mixture, wherein the organic mixture comprises a natural pigment and preservative, a vehicle, an adhesive, a filler, a wetting agent, and a solidifying agent;
• performing a first high-temperature synthesis process on the organic mixture, to form a first intermediate;
• performing, after the first intermediate is solidified at a room temperature, a second high-temperature synthesis process on the first intermediate in a vacuum environment, to form a second intermediate;
• performing a first high-pressure filtration process on the liquid second intermediate and letting the second intermediate stand for a first preset time, to form a filtered product;
• and
• performing a second high-pressure filtration process on the filtered product and letting the filtered product stand for a second preset time, to form the color material.