艾森股份：公司正性PSPI光刻胶在多家晶圆客户的测试和验证进展顺利，已经通过部分客户验证

Core Viewpoint - The company has successfully entered the small-scale production phase of its positive PSPI photoresist and is progressing well in testing and validation with multiple wafer customers [1] Group 1: Production and Validation - The positive PSPI photoresist has passed validation with some customers [1] - The company is expanding production capacity based on market demand [1]