Group 1 - IGG (00799.HK) announced a share buyback on November 7, 2025, spending HKD 492,000 to repurchase 130,000 shares at a price range of HKD 3.77 to 3.80 per share [1] - The buyback reflects the company's strategy to enhance shareholder value and indicates confidence in its future performance [1] Group 2 - The announcement coincides with the news that Maike Biological (300463.SZ) has obtained a product registration certificate for its Chlamydia pneumoniae IgG antibody test kit, highlighting ongoing developments in the healthcare sector [1]