Group 1 - Inner Mongolia Tingjing Trading Co., Ltd. has been established with a registered capital of 1 million RMB [1] - The legal representative of the company is Song Ziyu [1] - The business scope includes sales of construction materials, engineering technical services, and various other technical services and sales related to new materials and construction [1] Group 2 - The company is involved in the sales of green composite materials for rail transit and various construction-related products [1] - It also offers services in engineering management, construction supervision, and project management [1] - The company is permitted to engage in construction labor subcontracting and various engineering construction activities, subject to approval [1]

Group 1 - A new company, Jiangsu Wuxi Hongrui Transportation Materials Co., Ltd., has been established with a registered capital of 10.08 million RMB [1] - The legal representative of the company is Han Jin [1] - The company's business scope includes sales of green composite materials for rail transit, construction materials, metal materials, plastic products, mechanical equipment, industrial textile products, synthetic materials, and waterproofing materials [1]