Group 1 - A new company, Wuxi Yishan Five Pneumatic Technology Co., Ltd., has been established with a registered capital of 513,000 RMB [1] - The legal representative of the company is Tang Jiannan [1] - The company's business scope includes a wide range of services and sales related to technology, machinery, and environmental protection [1] Group 2 - The company offers technical services, development, consulting, and promotion [1] - It engages in the sale of various machinery and electrical equipment, including mining machinery and intelligent instruments [1] - The company also provides environmental consulting services and sales of environmental monitoring instruments [1]