Generally, it can be made in the following ways: 1. The first part is 1. Indicate the lawyer's letter and number; 2 write the full name of the unit or individual to be dispatched. Second, the content of 1. Inform the identity of the lawyer and the fact that the law firm accepts the entrustment; 2. State the facts on which the letter is based; 3. Conduct legal analysis according to the facts; 4. Explain the lawyer's opinion; 5. Make suggestions or requests to lawyers. Three. Signature In view of the fact that lawyers must rely on the law firm to engage in legal services, the signature should indicate the name of the law firm and affix its official seal with the lawyer's signature. 4. At the end, the address, postal code, telephone number, website, e-mail address and lawyer contact information of the law firm should be indicated. Article 28 of the Lawyers Law A lawyer may engage in the following businesses: (1) Accepting the entrustment of a natural person, legal person or other organization to act as a legal adviser; (two) to accept the entrustment of the parties in civil cases and administrative cases, to act as agents and to participate in litigation; (3) Accepting the entrustment of criminal suspects in criminal cases, providing them with legal advice, representing appeals and accusations, applying for bail for arrested criminal suspects, accepting the entrustment of criminal suspects and defendants or the designation of people's courts, acting as defenders, accepting the entrustment of private prosecutors in private prosecution cases, victims in public prosecution cases or their close relatives, and representing them in litigation; (four) to accept the entrustment and represent the complaints of various litigation cases; (five) to accept the entrustment and participate in mediation and arbitration activities; (6) Accepting entrustment to provide non-litigation legal services; (seven) to answer questions about the law and write litigation documents and other documents related to legal affairs.