1. First, you can visit the official website of China National Intellectual Property Administration. Select the function of "patent search and query" in the government service column on the home page. After entering the patent search page, select the "advanced query" option and enter the complete patent number for query. China National Intellectual Property Administration website provides comprehensive and authoritative patent information, which can help you get the detailed information of the patents starting with "ZL" accurately.
2. In addition, you can also use the patent retrieval platform to query. At present, there are many professional patent retrieval platforms on the market, such as Baiteng patent retrieval platform. These platforms usually provide convenient retrieval functions and rich patent databases. You can select "China Patent Inquiry" in the advanced inquiry column of the homepage and enter the patent number for inquiry. Through the above channels, you can easily find out the detailed information of patents starting with "ZL", including key information such as patent applicant, application date, patent type and authorization announcement date.