688291，明日停牌

Group 1 - The core point of the article is that Jin Chengzi plans to acquire 55% of Changchun Samit Optoelectronics Technology, leading to a temporary suspension of its stock starting July 31, 2025, for no more than 10 trading days [1] - The transaction is expected not to constitute a major asset restructuring or related party transaction for Jin Chengzi, and it will not lead to a change in the actual controller of the company [1][4] - Samit was established in early 2015 with a registered capital of 5.56 million yuan, focusing on the research, production, and sales of optoelectronic equipment [2] Group 2 - Jin Chengzi's main business involves the research and sales of laser processing equipment motion control systems and components, providing comprehensive solutions and technical services for various laser processing scenarios [4] - The company's revenue has been growing, but the net profit attributable to the parent company has declined, with revenue figures of 198 million yuan, 220 million yuan, and 212 million yuan for the years 2022 to 2024, showing year-on-year growth rates of -2.41%, 11.00%, and -3.44% respectively [4][6] - The net profit attributable to the parent company for the same period was 39.08 million yuan, 42.22 million yuan, and 30.50 million yuan, with year-on-year growth rates of -25.95%, 8.05%, and -27.78% respectively, indicating a decline in profitability [6] Group 3 - The stock price of Jin Chengzi reached 33.39 yuan per share as of July 30, with a total market capitalization of 3.428 billion yuan [7] - The recent surge in the 3D printing market, driven by consumer interest, has positively impacted Jin Chengzi's stock performance, with a cumulative price increase of 30% over three trading days [6] - Although Jin Chengzi has products related to laser 3D printing control systems, these products account for less than 2% of the company's total revenue [6]