日科化学：已回购501.21万股

Group 1 - The company announced a share buyback of 5.0121 million shares, representing 1.08% of its total share capital [1] - The highest transaction price during the buyback was 5.72 CNY per share, while the lowest was 5.21 CNY per share [1] - The total amount spent on the buyback was 28.0538 million CNY [1] Group 2 - The buyback aligns with the company's repurchase plan and complies with relevant laws and regulations [1]