The instrument panel is a very unique part of the car, integrating safety, functionality, comfort and decoration. The main die drawing direction of the instrument panel is determined according to the outer surface of the instrument panel and the air outlet position. It is generally between 20 degrees and 30 degrees, and the die drawing direction of the secondary instrument panel is vertical; the direction of the outer surface of the instrument panel is at least 7, which shall be determined on the depth of the surface skin pattern of the instrument panel. The drawing angle of the invisible area should not be less than 3. If less than 3, the surface of the parts may produce other marks, because the use of slider will first affect the appearance of the parts, and then affect the life of the mold, and the mold cost will increase accordingly.