1. Check the background and qualifications of Yucaotang, including company registration information, establishment time and relevant certificates.
2. Understand the reputation and user evaluation of Yucaotang, and look for comments and experience sharing about Yucaotang on social media, forums or other channels. You can also communicate with other users and ask them about the experience and effect of using the Imperial Cottage.
3. You can try to contact Yucaotang customer service for consultation, and observe its response speed, professionalism and service attitude to judge its authenticity.