Shuhai is a supplier to Haidilao.

Yihai International was founded in 2005, when Haidilao set up its Chengdu branch, and then put into operation its first production line of hotpot base to supply hotpot restaurants operated by the Sichuan Haidilao Group.In 2013, Yihai was incorporated as an investment holding company in the Cayman Islands.On July 30, 2020, Yihai International, with a value of RMB 88 billion, was listed among the No. 5 on the 2020 Hurun China Top 10 Food and Beverage Companies.

Since its inception, the company has not only catered to the development of Hai Di Lao's own business, but also serves Beijing Aviation Food, one of the world's largest retail groups, which is a "7-11" airline catering company.

Hot pot: Haidilao, Hot One, Wei Laoxiang; Chinese food: Youth Restaurant, Jiumaojiu, New White Deer, Fengzhuan, Xibei, Huda, Qunsheng Shijia; barbecue: a long time ago, Massachusetts Institute of Technology, Jiangbian City outside; Korean food: Han Shi Barbecue.