only Linyi has it.

According to (Tianyancha) inquiry, Yishanfang Group is a food company established in Linyi High-tech Zone, which was established in March 2114. The company is committed to providing healthy catering services, including food production, sales and distribution. Yishanfang Group has a number of stores and branches in Linyi City, providing various healthy foods and catering services for local residents. So far, it has not been extended to other cities or regions. It can be confirmed that the catering room is currently only operating in Linyi City, and there are no stores or branches in other regions for the time being.