It is described in Chapter 3, Part II, 2. 1.2.2 of the Patent Examination Guide. About the use of propaganda. I am a patent agent.

Your background is relatively small. There are many kinds of products, such as mechanical products, such as soymilk machine. Although you don't give any technical features, users can know all the technologies through disassembly and mapping. This is propaganda. If the product is a compound, such as a drug, you can't know its raw materials and processing methods through reverse engineering, so you are not allowed to use publicity, such as the formula of Coca-Cola. Call me if you have any questions.