Weichang potatoes are geographical indication protected products. Paddock Potatoes is a geographical indication certification mark.

In the past, Paddock Tudou, who was not allowed to enter the "Grand Hall", now walks into the "McDonald's" restaurant with dignity and becomes "Golden Egg Egg".

Weichang Manchu and Mongolian Autonomous County in Hebei Province is the largest production base of time-lag vegetables in the country. The "golden and silver eggs" are not as good as the "potatoes" in Weichang. The potatoes here are famous at home and abroad for being pure natural and pollution-free. .

In 1979, Weichang County was approved by the Ministry of Agriculture as the national potato (commonly known as potato) seed potato base. In order to speed up the development of potato production, they established a potato research institute, a potato detoxification center, and built a nationally advanced potato virus detection laboratory. In 1994, factory-scale production of virus-free potato mini-tubers was achieved. In 1995, the establishment of the Sino-US joint venture Chengde Simplot Seed Potato Co., Ltd. marked that the county's potato industry had initially formed an industrialized management pattern that integrated production, processing and marketing, and agriculture, industry and trade, and became the county's pillar industry.

The protection scope of Weichang potato geographical indication products is the administrative area currently under the jurisdiction of Weichang Manchu and Mongolian Autonomous County, Hebei Province.