What does the official letter of the law firm mean?

The official letter of a law firm is a written letter issued by a law firm to public security organs, people's procuratorates, people's courts and other departments to prove the true identity of a lawyer's agent or defender.

Legal basis:

Article 33 of the Lawyers Law of People's Republic of China (PRC) * * * Since the criminal suspect is interrogated for the first time by the investigation organ or compulsory measures are taken, the entrusted lawyer has the right to meet the criminal suspect and defendant with the lawyer's practice certificate, the certificate of law firm, the power of attorney or the letter of legal aid to learn about the relevant situation.