Don’t fool people with high scores, haha. 1. When applying for an invention patent (if there are drawings) or a utility model patent, the description and drawings must be submitted in duplicate (one original and one copy). 2. Use this page for the first page of the drawings, and use white paper of the same size and quality for the continuation pages. Only the front side of the paper should be used, and there should be margins on all sides: 25 mm on the left and top, and 15 mm on the right and bottom. 3. Mailed application documents must not be folded. 4. Layout of drawings 1. The drawings should be drawn vertically on the drawing paper as much as possible and clearly separated from each other. When the lateral size of the parts is significantly larger than the vertical size and must be arranged horizontally, the top of the drawing should be placed on the left side of the drawing. When there are more than two drawings on a page, and one of the drawings has been arranged horizontally, the other drawings on the page Drawings should also be arranged horizontally. 2. When a picture cannot be drawn on one piece of paper, it can be drawn on several drawings, but a reduced-scale whole picture should be drawn separately, and the positions of each sub-picture should be marked on the whole picture. 5. Numbering of figures If the total number of figures is more than two, they should be numbered sequentially with Arabic numerals (this number has nothing to do with the page numbering of the figures), and the number should be preceded by the word "Figure", such as Figure 1 and Figure 2. This number should be marked directly below the corresponding drawing. No numbering is required when there is only one picture. 6. Drawing of drawings 1. Drawing tools and black ink should be used. The lines should be even, clear, and deep enough. Coloring or alteration is not allowed, and engineering blueprints are not allowed. 2. The cross-sectional view should indicate the direction of the cross-section and the arrangement of the cross-sectioned drawings. 3. Section lines. The distance between section lines should be adapted to the size of the section view and should not affect the cleanliness of the drawing (including reference marks and mark lead lines). 4. Proportion Each part in the diagram should be drawn in proportion. 5. The size and clarity should ensure that all details in the image can still be clearly distinguished when the image is reduced to two-thirds, and should be suitable for mass reproduction by photoengraving, xerography, microfilming, etc. 7. Text in the picture Except for some essential words, such as: "water", "steam", "open", "off" and "A-A section", there must be no other annotations in the picture. 8. Reference signs Reference signs shall be numbered using Arabic numerals, and the reference signs indicating the same component in the application document shall be consistent. However, the reference signs in each drawing are not required to be continuous, and reference signs not mentioned in the text of the description shall not appear in the drawings. 9. The accompanying drawings in the manual should be numbered sequentially in the center of the frame under each page.