全柴动力：元隽氢能的质子交换膜和膜电极等产品正处于测试验证和试产试销阶段

Group 1 - The core viewpoint of the article is that QuanChai Power (全柴动力) is actively developing hydrogen fuel cell products through its subsidiary, Yuanjun Hydrogen Energy, which are suitable for various applications such as buses, forklifts, and energy storage [1] - The domestic fuel cell industry is currently in a phase of limited demonstration operations for validation, with no large-scale commercial usage yet [1] - Yuanjun Hydrogen Energy's products, including proton exchange membranes and membrane electrodes, are in the testing and trial production stages [1]