Group 1 - The company Duople (301528) has received recognition from clients for some of its products, achieving import substitution [1] - A client, Xinlian Iron, provided an application proof indicating the use of the company's specialized probe set in the detection system for hollow axles in high-speed trains [1] - The probe set consists of multiple probes at different angles, capable of detecting defects in various directions of the hollow axle, demonstrating superior performance and reliability [1] Group 2 - The performance and durability of the probe set have reached an internationally advanced level, breaking the monopoly of foreign products [1] - The industry in which the company operates has significant potential for domestic substitution [1]