JCT(SH:603657) Xuan Gu Bao·2025-12-24 12:22Suspension and Resumption - Jiaheng Jiahua's controlling shareholder is planning a change in the company's control, leading to a suspension of its stock [1] Buybacks and Increases - Guangqi Technology's controlling shareholder proposed a share buyback of between 50 million to 100 million yuan [2] - Sentai Co., Ltd.'s controlling shareholder intends to increase its stake in the company by no less than 100 million yuan [3] Mergers and Acquisitions - Gaozheng Minexplosion is acquiring 100% equity of Heilongjiang Overseas Explosive Materials Co., Ltd. for a total of 510 million yuan, which includes transferring 31,000 tons of industrial explosive production capacity to Tibet to address production capacity constraints [4] External Investments and Daily Operations - Huaqin Technology signed a contract worth 254 million yuan for special functional materials for aircraft fuselage [5] - Wankai New Materials' subsidiary signed a business contract with Lingxin Qiaoshou to provide lightweight components for humanoid robot arms [5] - Chunguang Technology received a procurement order for robot products worth 43.26 million yuan from Lexiang Technology [6] - Chalco International signed a total EPC contract for a 2.909 billion yuan project to upgrade electrolytic cells in Qingtongxia [7] - Longpan Technology plans to increase the production capacity of its "new energy vehicle power and energy storage battery cathode material" project from 62,500 tons/year to 100,000 tons/year [7] - Heng Rui Pharmaceutical's injectable SHR-A1904 has been included in the list of breakthrough therapeutic varieties, with no similar products approved globally [8] - Huakang Clean signed a pre-bid for a 157 million yuan procurement project for special hospital departments [9] - Xingyuan Zhuomei received a supplier designation notification from a domestic new energy vehicle manufacturer, with expected sales of approximately 575 million yuan over four years from 2027 to 2030 [9] - Samsung Medical's subsidiary signed a contract for the Brazil CPFL smart meter project, totaling 106 million reais, approximately 135 million yuan [9] - Enhua Pharmaceutical's subsidiary signed an exclusive commercial cooperation agreement with Green Leaf Pharmaceutical and its subsidiary Green Leaf Jiaao [10]