Manufacturer’s name, address, production hygiene license number, corporate logo, and production date. According to Article 27 of the "Law of the People's Republic of China and Domestic Product Quality", the label on the product or its packaging must be authentic, have a product quality inspection certificate, and have the product name, manufacturer name and address in Chinese. According to If the characteristics and usage requirements of the product need to be marked, the product specifications, grades, names and contents of the main ingredients shall be marked accordingly in Chinese; if consumers need to be informed in advance, they shall be marked on the outer packaging, or provided to consumers in advance. For relevant information, products with a limited use period should clearly indicate the production date and safe use period or expiry date in a prominent position. Therefore, if fans are produced with trademarks for sale, the name, address, production hygiene license number, and company name of the manufacturer need to be printed on the fans. mark, production date.