尤洛卡：继珩光学曾参与研制生产并提供了成套的“吉林一号”卫星镜片，但并未形成业务收入

Group 1 - The core point of the article is that Youloka (300099) confirmed that Jihang Optics is a subsidiary of its wholly-owned subsidiary, Shikai Technology [1] - Jihang Optics participated in the research and production of the complete set of "Jilin-1" satellite lenses as a research project [1] - However, Jihang Optics has not generated any business revenue from this project [1]