The mixed reality (MR) devices from Firefly Dimension, Inc. have been implemented in various scenarios within the power grid system, including addressing emergency repair issues through MR remote collaboration, video inspection records, real-time audio and video calls, and MR skill training for employees. The software and hardware technologies used are all developed in-house by the company and possess independent intellectual property rights, featuring several core technologies that are currently among the world's leading advancements. This includes the largest optical see-through field of view globally, the only real-time environmental perception technology in China (one of only four in the world), ultra-long battery life, and hot-swappable lamp technology. Additionally, the company offers standardized software, including MR remote collaboration (3D video conferencing) and an MR no-code editor (3D PPT), which can help enterprises quickly and cost-effectively deploy and utilize these solutions. For inspection scenarios, a complete MR inspection system has been launched, which includes work order systems, video recording, automatic matching of videos and work orders, and real-time audio and video calls.