DFD(SZ:002407) Mei Ri Jing Ji Xin Wen·2025-09-30 09:57Group 1 - The company, Dofluor (002407.SZ), has announced a business collaboration with Yifei Laser, focusing on the large cylindrical battery market, which primarily targets applications in electric vehicles, energy storage, and light vehicles [1] - The company's lithium battery products are mainly concentrated on the large cylindrical market, which is expected to cover three core application scenarios: electric vehicles, energy storage, and light vehicles [1] - In the field of solid-state batteries, the company is engaged in substantial R&D collaborations with top domestic universities and research institutes, involving various material routes such as polymers and sulfides [1] Group 2 - There is a growing market demand for large cylindrical batteries, which are noted for their excellent comprehensive performance and are expanding into emerging fields such as 3C consumer electronics, eVTOL, drones, electric ships, and robotics [3] - A significant technology project titled "Key Technology and Equipment Development for Precision Laser Welding of Full-Ear Large Cylindrical Batteries" was officially launched on August 29 in Wuhan, involving collaboration between Yifei Laser and other companies like EVE Energy and Guoxuan High-Tech [3] - The inquiry from investors indicates interest in the company's layout regarding large cylindrical batteries and the "large cylindrical + solid-state battery" technology path [3]