航天彩虹：膜业务所处行业严重供大于求，已逐步清退低质资产

Group 1 - The company operates in a highly competitive membrane business sector, facing a significant oversupply situation [1] - The company is gradually phasing out low-quality and inefficient businesses and assets [1] - Strategies implemented include reducing outsourcing costs, improving production efficiency, exploring niche markets, and developing high value-added products [1] Group 2 - The company aims to maintain positive cash flow in its new materials business during the industry's downturn [1] - Efforts are being made to mitigate the impact of goodwill impairment on the company [1]