瑞丰新材：公司生产的润滑油添加剂可用于航空航天发动机油领域，但目前公司在售产品未在该领域形成收入

Group 1 - The company, Ruifeng New Materials (300910.SZ), confirmed that its lubricant additives can be applied in the aerospace sector, specifically for engine oil [2] - Currently, the company's products have not generated revenue in the aerospace field [2]