The public information can be found in the corporate signature: enterprise industrial and commercial information publicity network, court judgment document network and company annual report.

1. Business Information Publicity Network: This website is the official website operated by the State Administration of Market Supervision, which can inquire about the basic information of all enterprises registered in China, including legal representatives, registered capital, etc. On the enterprise's industrial and commercial information publicity website, you can view the documents and announcements filed by the company, which are generally signed by the legal representative.

2. Court Judgment Document Network: This website is the official website operated by the Supreme People's Court, which can inquire about the judgments and rulings issued by courts at all levels in China. In these documents, the defendant or plaintiff usually signs at the end of the document for confirmation.

3. Company Annual Report: All companies registered in China need to submit annual reports to the industrial and commercial departments every year. These reports usually list the main responsible persons of the company and attach their signatures.