钢研纳克：公司与中钢天源实际控制人均为国务院国资委，除此之外无股权关系

Group 1 - The company, Steel Research Nake (300797.SZ), clarified its relationship with China Steel Tianyuan, stating that both entities are controlled by the State-owned Assets Supervision and Administration Commission of the State Council, but there is no equity relationship between them [1] - The main business of the company includes metal material testing and the research and manufacturing of testing instruments [1]