上大股份：公司现已取得主要商业航天企业的资质认证，并长期稳定批产供货

Group 1 - The company, Shangda Co., is recognized as a qualified supplier in the aerospace sector, providing critical high-temperature and high-strength components for solid rocket engines, liquid rocket engine hot-end parts, and other rocket components [2] - The company has obtained certification from major commercial aerospace enterprises and has established a stable production and supply relationship [2] - There is no investment relationship between the company and Blue Arrow Aerospace, despite inquiries from investors [2]