Group 1 - Tianjin Ruyu Engineering Consulting Service Co., Ltd. has been established with a registered capital of 10 million RMB, fully owned by Shanghai Ruyu Enterprise Management Consulting Co., Ltd. [1] - The legal representative of Tianjin Ruyu Engineering Consulting Service Co., Ltd. is Qu Bo [1]. - The company is located at No. 72, Ziwei Road, Lijian Garden, Room 601, Dongli Lake Street, Dongli District, Tianjin [2]. Group 2 - Shanghai Ruyu Enterprise Management Consulting Co., Ltd. holds 100% of the shares in Tianjin Ruyu Engineering Consulting Service Co., Ltd. [2]. - The business scope of Tianjin Ruyu includes engineering management services, sales of construction materials, and various technical services among others [2]. - The company is classified under the national standard industry of scientific research and technical services, specifically in professional technical services [2].