1. China National Intellectual Property Administration website: You can visit the official website of China National Intellectual Property Administration, which will provide the download service of patent database and patent authorization announcement. You can register an account on its website and use the relevant search function to retrieve and download the required patent authorization announcement.
2. Patent search platforms: In addition to the official website of China National Intellectual Property Administration, there are also some third-party patent search platforms that also provide download services for patent authorization announcements. You can register your account on these platforms, conduct patent search, and download the corresponding patent authorization announcement directly.