Tranche Update on DongHua Testing Technology Co. , Ltd.'s Equity Buyback Plan announced on October 26, 2023.

Jiangsu DongHua Testing Technology Co., Ltd., formerly Donghua Testing Technology Co., Ltd., is principally engaged in the research, development, production and distribution of structural mechanics performance testing instrument and bundled software, as well as the provision of solutions and technical services. The Company's products mainly include static strain testing and analyzing systems, dynamic testing and analyzing systems, analytical instruments and related accessories, among others. The Company's products are mainly used in the structural mechanics performance testing of industrial products, the optimal structure designing verification testing of industrial products, the functional security reliability performance testing of large buildings, as well as the monitoring and bug detecting of equipment, among others. The Company is also engaged in the provision of related technology development services. The Company distributes its products within domestic market.