People's Bank of China
The People's Bank of China is the official name of the Chinese central bank. Under their guidance, the China Gold Coin Incorporation (CGCI) produces Panda bullion coins in gold and silver on an annual basis.
The design of the Panda changes on each year, but the coins always feature the Temple of Heaven and the year of production on the obverse side. Chinese Panda coins are produced in metric format rather than traditional imperial, meaning investors and collectors can get 1g, 3g, 8g, 15g, and 30g bullion coins.
Shanghai, Shenyang, Shenzhen, and Nanjing are the four main minting or printing locations for currency in China, and these sites - in some capacity - have also been used for the bullion coin production by the CGCI.
Other reports suggest sites at Wuchang, Kuailin, Lanjou, Chengdu and Qunming, as well as Taiwan. Unfortunately the Chinese government heavily protects information about the country against outside enquiries, and currency production is one of these aspects shielded, meaning accurate knowledge of the bullion minting locations isn't available at present.