Yan Xi’s rating is trustworthy. Yanxi Rating is the first service organization in Shandong that has been approved by the State Administration for Industry and Commerce to operate legally and specializes in the grading and appraisal of coin collectibles. It was jointly established by senior connoisseurs who are active in the front line at home and abroad. "Yanxi Rating" and "YXGA" It is a professional rating brand launched for the company and owns the two trademark intellectual property rights of "Yanxi Rating" and "YXGA". It has obtained the authorization certificate from the Trademark Office and is very trustworthy. It better guarantees the promotion and publicity of the two major rated brands. It has also hired a number of well-known domestic coin and miscellaneous connoisseurs to become the company's senior rating consultants. The company's main business is the promotion and trade promotion of appraisal and rating services for banknotes, ancient coins, machine-made coins, stamps, miscellaneous items, badges and other cultural artworks.