长江材料：公司生产的3D打印砂应用于3D打印砂型铸造，采购公司3D打印砂的客户中有航天领域的供应商

Group 1 - The core viewpoint of the article highlights the growing interest in commercial aerospace, particularly in rockets and satellites, and the relevance of the company's products in this sector [1] - Changjiang Materials (001296.SZ) confirmed that its 3D printing sand is utilized in 3D printed sand casting, with customers in the aerospace field purchasing their products [1]