Group 1 - The stock price of Oupankangshi on July 30 was 18.12 yuan, a decrease of 0.08 yuan, representing a decline of 0.44% from the previous trading day [1] - The trading volume on that day was 258,927 hands, with a total transaction amount of 472 million yuan [1] - As of July 18, 2025, the total number of shareholders for Oupankangshi was 62,918 [1] Group 2 - The company's main business involves the research, development, production, and sales of ophthalmic medical devices [1] - Key products include orthokeratology lenses and rigid gas permeable contact lenses [1] - On July 30, the net inflow of main funds was 5.5334 million yuan [1]