2连板冠石科技：公司目前只涉及光掩膜版制造业务 不涉及电子束光刻机设备的制造业务

Core Viewpoint - The stock price of Guanshi Technology (605588.SH) has experienced an abnormal fluctuation, with a cumulative increase of over 20% in closing prices over three consecutive trading days, leading to a self-examination by the company [1] Summary by Relevant Sections - Stock Price Movement - The company's stock price has deviated significantly, with a cumulative increase exceeding 20% over three trading days, indicating unusual trading activity [1] - Company's Business Focus - Guanshi Technology is primarily engaged in the manufacturing of photomasks and does not manufacture electron beam lithography equipment, despite being associated with the photolithography equipment sector in market discussions [1] - Revenue Impact - The revenue from the photomask manufacturing project is projected to account for less than 2% of the company's total revenue in the first half of 2025, indicating that it has a minimal impact on the company's main business operations [1]