Sample brochure design is based on conceptual elements (points, lines, surfaces), through visual elements (graphics, colors, shapes) and relational elements (direction, space, center of gravity) to build a visual system, combined with practical elements to convey core information. In the design process, techniques such as grouping, separation, and superposition are used, and principles of gradation (shape, direction, structure) and repetition (basic form, structure, color) are applied to create a sense of hierarchy and unity. The design needs to take into account physical factors such as printing processes and paper materials, emphasizing the accuracy of information transmission. Specifications: The standard size is 210mm×297mm.