Daguan Tongbao Gongbo rated coins are reliable. Daguan Tongbao Gongbo Company has registered a trademark and obtained certification from the industrial and commercial department, and has a legal business license. The company is currently in business. Beijing Gongbo Ancient Coin and Artwork Appraisal Co., Ltd. (English BEIJINGGONGBOCOINSAUTHENTICATION, hereinafter referred to as Gongbo Company or GBCA) was established in March 2011. It is the first company in China to be officially registered with the Industrial and Commercial Bureau and its main business is the appraisal of coins and folk cultural relics and art collections. business organization. The establishment of Gongbo Company broke through the almost global monopoly of the U.S. appraisal industry, made up for the shortcomings in China's coin collection, appraisal, and grading fields, contributed to China's new coin culture industry, and also created a large number of jobs.