Legal basis: Article 22 of the Assets Appraisal Law of People's Republic of China (PRC), the client has the right to choose appraisal institutions that meet the requirements of this law, and no organization or individual may illegally restrict or interfere. If the evaluation involves more than two parties, the parties shall entrust an evaluation agency through consultation. Commissioned to carry out statutory assessment business, should choose the assessment agencies according to law. According to Article 25 of People's Republic of China (PRC) Assets Appraisal Law, appraisal professionals should conduct on-site investigation on the appraisal object according to the specific conditions of the appraisal business, collect ownership certificates, financial and accounting data and other materials, and verify, analyze and sort them out as the basis of appraisal.