Gong Bo is the earliest and most reputable coin rating agency in China, while the foreign currency research center is the Zhejiang branch of Gong Bo, which can do silver dollar rating. In addition, Huaxia and Baocui can be rated as silver dollars.
In order to meet the increasing demand for coins from all over the country and platforms, especially for modern foreign currency rating, the company chose to open the "World Coin Research Center" in Hangzhou, focusing on some low-end batches of China coins.