久吾高科：收入主要来源于膜集成技术整体解决方案及其成套设备、材料及配件

Group 1 - The company, Jiuwu Hi-Tech (300631), focuses on the research and application of separation materials and technologies, including ceramic membranes, organic membranes, and lithium adsorbents [1] - The company's revenue primarily comes from integrated membrane technology solutions, complete equipment, materials, and accessories [1] - Jiuwu Hi-Tech provides systematic integrated membrane technology solutions to downstream customers [1]