Group 1 - The latest stock price of Yuyin Co., Ltd. is 6.61 yuan, with an increase of 0.14 yuan, representing a rise of 2.16% compared to the previous trading day [1] - The trading volume for the day was 740,275 hands, with a total transaction amount of 487 million yuan [1] - Yuyin Co., Ltd. specializes in the research, development, production, sales, and service of financial self-service equipment and related system software, operating within the computer equipment manufacturing industry and involving concepts such as blockchain and biometrics [1] Group 2 - As of the end of the first quarter, Yuyin Co., Ltd. has a debt-to-asset ratio of less than 10%, which is considered low within the industry [1] - The recent increase in activity in the mergers and acquisitions market has drawn attention to companies with low debt ratios [1]