According to author Adrien von Ferscht, the Bao Sheng workshop was originally located in Canton but is thought to have later relocated to Hong Kong. Bao Sheng was one of the more preferred suppliers of higher quality goods to Wang Hing & Co. For further information please see Adrien von Ferscht, Chinese Export Silver 1785-1940 – The Definitive Collectors’ Guide, 4th Edition, Glasgow and Beijing, January 2015.