Tianyancha can mainly check companies and related information. 1. You can check corporate industrial and commercial information, legal proceedings, registered trademarks, and corporate changes. 2. You can also query corporate legal persons, corporate annual reports, news, acquisition information, and foreign investments. 3. However, this software can only be used to query the company's public information, and non-public privacy is no different. 4. Therefore, it is more suitable for finance, investment, lawyers, reporters, sales or business people to understand corporate information. 5. Its advantage lies in its fast query speed and simple operation. You can quickly locate relevant companies by using keywords.