联赢激光(688518.SH)：光伏子公司主要从事光伏领域设备研发和生产

Group 1 - The core viewpoint of the article is that Lianying Laser (688518.SH) has a subsidiary focused on the research and production of equipment in the photovoltaic sector [1] Group 2 - The company is actively engaged in the photovoltaic field, indicating a strategic focus on renewable energy technologies [1]