One official administrative seal, one special financial seal, one special invoice seal, and one personal seal reserved by the bank. The official seal of the law firm and signed by the attorney in charge. A lawyer's letter refers to a professional legal document that a lawyer prepares and sends when entrusted by a client to disclose and evaluate relevant facts or legal issues, and then makes requests to achieve a certain effect. A lawyer uses a lawyer's letter to make a legal evaluation and risk estimate of a certain fact. The purpose is to use legal standards and the lawyer's judgment to inform the recipient of the legal facts and use them to determine the pros and cons, so that the recipient can draw their own conclusions. Legal evaluation is to convey the law and express ideas. It is essentially a legal act of entrusting an agent to express one's intention, which plays an important role in safeguarding the legal rights and interests of litigants.