According to the product operation manual of KFC in China, the diameter of hamburger bread is 1 1.5CM, the height is 7.8CM, the bottom thickness is 1.5CM, and there are 80-90 sesame seeds. KFC is one of the multinational chain restaurants in the United States and the second largest fast food KentuckyFriedChicken chain enterprise in the world. Founded by the founder Harland Sanders on 1952, it mainly sells high-calorie fast food such as fried chicken, hamburgers, French fries, 1: 1 rice, egg tarts and soda. China KFC belongs to Yum! Brands. China Holdings Limited ("Yum! China for short), the stock code is Yum! Brands, a franchisee in Chinese mainland, has the exclusive right to operate KFC brand in Chinese mainland.