Core Viewpoint - Xizi Clean Energy (002534) announced on August 7 that its subsidiary, Hangzhou Hangguo General Equipment Co., Ltd., specializes in the design and manufacturing of boiler auxiliary machines and various specialized equipment, including five major product series [1] Group 1: Company Overview - The subsidiary has been involved in tunnel excavation since 2005 and has successfully produced various models of shield tunneling machines for domestic and international urban tunnel construction projects [1] - The first shield tunneling machine, "Xizi," was developed in 2008 and has been used in projects such as the Nanjing and Suzhou metro tunnels [1] - The products have been utilized in numerous projects, including the Singapore power tunnel, Singapore metro projects, Shanghai Line 17, and Hangzhou Line 5, among others [1] Group 2: Market Potential - The shield tunneling machine market is projected to exceed 100 billion [1] - The company is actively engaging with market demands to secure order opportunities as the Yaxia project is still in the early stages of construction [1]