艾森股份：公司高端光刻胶关键原材料自研自产

Core Viewpoint - The company is focused on the domestic substitution process of "bottleneck" products, particularly in the field of photoresists, and has achieved mass production of advanced packaging photoresists and PSPI photoresists [2] Group 1: Product Development - The company has successfully mass-produced photoresists, including advanced packaging photoresists and PSPI photoresists [2] - Ongoing research and testing include high aspect ratio KrF photoresists and ICA chemical amplification photoresists [2] Group 2: Supply Chain Control - The key raw materials for the company's high-end photoresist products are self-researched and self-produced, ensuring supply chain autonomy and control [2]