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On May 21, Chengbang Co., Ltd. released an announcement regarding unusual price fluctuations, revealing that its stock had reached the daily limit for four consecutive trading days, commencing on May 18, 2026, marking a cumulative increase of 46.43%. Its subsidiary, Dongguan Xincun Chengbang Technology Co., Ltd., is primarily engaged in the research and development (R&D), design, production, and sales of semiconductor memory devices. Notably, the business scale of this subsidiary remains relatively small, and its profit levels have been low over the past two years. According to the consolidated financial statements, the revenue of Xincun Electronics for the years 2024 and 2025 stood at RMB 110.5891 million and RMB 340.4857 million, respectively, with corresponding net profits of RMB 933,800 and RMB 18.2833 million.
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