requirements: first, the layout of the diagram should meet the requirements. The diagram should be arranged vertically as far as possible. If the width is greater than the height and it cannot be arranged within 14 cm, horizontal arrangement is allowed. At this time, the upper part of the diagram should be placed on the left side of the paper. If there are other charts on the same page, they should also be arranged horizontally.
second, the drawing should be drawn to scale. The size should ensure that all the details in the drawing can still be clearly identified when the drawing is reduced to 2/3 (linear). There must be no words in the picture except some essential short keywords (such as water, steam, on and off, etc.). If there are more than two drawings, they shall be numbered in Arabic numerals, and the number shall be preceded by the word "Figure". The lines of the drawing should be black and not easy to fade. The color should be dark enough, and no coloring is allowed, which meets the requirements of reproduction. Drawing must be done with drawing instruments, not blueprints.
thirdly, use this page on the first page of the attached drawings of the instruction manual. If it can't be written down, you can continue writing in white paper. Continued pages must be consistent with the size and quality of the home page, and written vertically. Only the front side can be used, and the back side can not be used. There should be blanks around. The name of the invention or utility model is centered, and there is a blank line between the name and the text. Mail application documents shall not be folded. Blanks should be left around, 2.5 cm on the left and top, and 1.5 cm on the right and bottom. After the application is approved, the patent right belongs to the enterprise or individual applying for it.