华光新材：产品少量应用在火箭推进器上，收入占比小。

Group 1 - The core viewpoint of the article is that Huaguang New Materials has a small revenue contribution from its products used in rocket propulsion systems [1] Group 2 - The application of Huaguang New Materials' products in rocket propulsion is limited, indicating a niche market presence [1] - The revenue generated from these applications is minor compared to the company's overall income [1]