After receiving the tip-off letter from the branch, the company should carefully verify the contents of the tip-off letter and understand the facts and circumstances of the tip-off. Investigate the problems involved in the report letter and collect relevant evidence to ensure that the handling is fair, objective and legal. If the tip-off letter involves illegal acts, you should immediately report to the police or report to the relevant departments. If the report letter involves the internal management problems of the company, it shall take timely measures to rectify and solve them.