Yes. Class 37 trademarks can be used for advertising. With the trademark corresponding to your own products, you can advertise your own products, including but not limited to product packaging, in-store posters, external platform promotions and other forms of advertising. Trademark Class Class 37 Trademarks are mainly for gas stations, laundry, construction and repair. Trademark Classification Class 37 trademarks mainly include: construction engineering services, installation and repair services, and mining services.