I haven’t tried it, you can check it. You can check it. It is better to teach a man to fish than to teach a man to fish. Master a query method that will be used for life. The method is as follows: 1. Log in to the "State Intellectual Property Office" or "China Patent Network" website (find the address on Baidu) 2. Click "Advanced Search" in the patent search section on the right 3. Type in the keywords you know, such as patent number or patent name, and click the red search button 4. Get all In the related patent search form, select a patent to enter the specific title page of the patent. 5. If prompted to install a plug-in, install it as required. Otherwise, you cannot browse the manual. 6. Click the manual button under the patent number to enter the manual page and browse the specific content. 7. Click the save button in the top row to select the download path, and select OK to download successfully