Who issued the legal letter that is valid?

Legal analysis: The lawyer's letter is issued by the law firm where the practicing lawyer works. The lawyer's letter is usually the lawyer's letter from the law firm, which has the address of the law firm. A lawyer's letter is issued by a lawyer. The client needs to appoint a lawyer to issue a lawyer's letter. The lawyer's letter itself does not have legal effect. It only serves to inform the parties of the legal consequences they will bear.

Legal basis: "Article 28 of the Lawyers Law of the People's Republic of China" Lawyers may engage in the following businesses: (1) Accept entrustment from natural persons, legal persons or other organizations to serve as legal advisors; (2) ) Accept the entrustment of civil cases and administrative cases, act as agents, and participate in litigation; (3) Accept the entrustment of criminal suspects and defendants, and serve as defenders of legal aid agencies. (3) Accept the entrustment of criminal suspects and defendants. Authorize or legally appointed by a legal aid agency to serve as a defender, accept entrustments from private prosecutors in private prosecution cases, victims in public prosecution cases, or their close relatives, act as agents, and participate in litigation; (4) Accept entrustment to represent various types of litigation cases; (5) Accept entrustment Participate in mediation and arbitration activities; (6) Accept entrustment to provide non-litigation legal services; (7) Answer legal consultations and write legal documents and other documents related to legal affairs. (7) Answer legal consultations and write litigation documents and other documents. Documents related to legal matters