At present, all dealers selling Tuhe Black Pig have been sued by a Shandong company because the trademark of Tuhe Black Pig has been registered, and other merchants named Tuhe Black Pig have infringed and temporarily ordered to suspend business.
Tuhe Black Pig, a specialty of Jiyang County, Shandong Province, is a geographical indication of national agricultural products. Tuhe Black Pig is named for its origin and coat color. Historically, it is mainly distributed in the Tu Hai Valley across Shandong Province, with Jiyang County as the central producing area, mainly distributed in Jiyang, Qihe, Linyi, Shanghe and Huimin.