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According to Aiqicha and Baidu Encyclopedia information, Yuyuyu refers to Shenzhen Yuyuyuku Catering Management Co., Ltd., which was established on January 12, 2017 and is registered in Shasha, Futian District, Shenzhen. Room 1207A, 12th Floor, Tairan Cangsong Building, Tairan 6th Road, Tianan Community, Toutiao Street. The legal representative is You Rumeng. The licensed business items are: catering distribution services, production and sale of Chinese food; production and sale of Chinese fast food; sales of pre-packaged food; retail of beverages and tea; production and sale of hot food; production and sale of cold dishes; sale of homemade drinks; pastry and bread manufacturing (excluding on-site Manufacturing and sales) Shenzhen Yuyuyuku Catering Management Co., Ltd. has 14 branches. Taier is a brand of Guangzhou Taier Catering Chain Co., Ltd., and the application date is April 14, 2016. The trademark registration number is 19629349. It specializes in pickled fish and is an innovative Internet catering brand. The stores radiate to most cities in the country, mainly in first-tier cities such as Beijing, Shanghai, Guangzhou, and Shenzhen. The first store in Singapore will be opened in 2021, and it will continue to expand stores overseas in the future. So these are two different companies.