The full name of Baocui Rating is Nanjing Baocui Cultural Service Co., Ltd., which was established in Jinling, the ancient capital, and is the first coin appraisal institution in China to obtain large amount of financing. 1. Baocui Rating is mainly engaged in the appraisal and rating of various coins, mainly including: ancient coins, modern copper coins, paper money, etc. 2. Four well-known domestic silver coin experts settled in Nanjing Baocui Rating Company. "