钢研纳克：检测服务和仪器制造为公司核心业务，营收占比分别约为50%、25%

Group 1 - The company, Steel Research Nake, has five main business segments, with testing services and instrument manufacturing being the core, accounting for approximately 50% and 25% of revenue, respectively [1] - The testing services segment is recognized as an authoritative testing institution in the domestic steel industry and is one of the most comprehensive and powerful testing research institutions in the field of metal materials in China [1] - The instrument manufacturing segment is a representative enterprise in China's instrument industry, with its spark direct reading spectrometer awarded the title of "Single Champion" by the Ministry of Industry and Information Technology, and products like ICP spectrometers and gas analyzers receiving BCEIA Gold Awards [1]