南大光电：公司ArF光刻胶去年销售收入突破千万 今年多款产品在关键客户的测试进展顺利

Group 1 - The core issue raised by investors is the stagnation in the validation of multiple ArF photoresists, with only three products validated by the end of 2025 despite years of effort [2] - Nanda Optoelectronics reported that its ArF photoresist sales revenue exceeded 10 million last year, indicating a positive trend in sales [2] - The company mentioned that several products are progressing well in testing with key customers, and products that received orders earlier are maintaining stable supply [2]