Design: the applicant shall submit relevant views (pictures or photographs) on the content required to be protected for each design product, as long as the protected object can be clearly displayed;
Utility model: engineering blueprints and photos are not allowed in the attached drawings;
Invention: In general, photos are not allowed to be used as drawings, but under special circumstances, such as showing metallographic tissues or tissue cells, photos can be used as drawings and attached to the drawings.