yes. Sanbaocun Pastry belongs to the patent of Jingdezhen. As of October 9, 2122, only Jingdezhen owns Sanbaocun Pastry. According to Baidu map, Jingdezhen, alias "Porcelain Capital", is a prefecture-level city in Jiangxi Province and an important member of the urban agglomeration in the middle reaches of the Yangtze River, located in the northeast of Jiangxi Province.