康欣新材：无锡建发累计增持491.15万股

Core Points - The company announced that the share buyback plan has passed the halfway mark, with Wuxi Jianfa having accumulated 4.9115 million shares, representing approximately 0.37% of the company's total share capital [1] - The total amount spent on the buyback has reached 13.4752 million yuan, which exceeds half of the lower limit of the planned buyback amount [1]