Group 1 - The company, Xuedilong, has a subsidiary named Orthodyne that primarily produces industrial chromatographs and analysis systems, continuous analyzers, and industrial gas detectors, providing complete process analysis solutions to clients [2] - Orthodyne's products are applied in the aerospace sector for detecting impurities in liquid hydrogen rocket fuel, ensuring safety and reliability during use [2] - The revenue from Orthodyne's business in aerospace and nuclear fusion is minimal, accounting for no more than 0.5% of the company's total annual revenue, thus having no significant impact on overall performance [2]