Group 1 - The approval of the bonded maintenance business pilot for Beijing Aviation Engine Maintenance Co., Ltd. and Hydro Aviation Equipment (Beijing) Co., Ltd. marks a significant breakthrough in building a "core maintenance-support service" aviation industry ecosystem in the Tianzhu Comprehensive Bonded Zone [1] - Beijing Aviation Engine Maintenance Co., Ltd. is the first large-scale maintenance service provider for Rolls-Royce's Trent series engines in mainland China, filling a gap in the aviation engine maintenance sector [1] - Hydro Aviation Equipment (Beijing) Co., Ltd. will provide full lifecycle management services for special tools used in engine maintenance, creating a synergistic model with the core maintenance services [1] Group 2 - Beijing Aviation Engine Maintenance Co., Ltd. aims to enhance its operational efficiency and brand image by establishing a comprehensive service system covering engine inspection, maintenance, and refurbishment [1] - The company expects to achieve the first Trent 700 engine maintenance by the end of this year [1] - Hydro Aviation Equipment (Beijing) Co., Ltd. plans to expand its business scope to include maintenance services for aircraft ground support equipment and final inspections for locally manufactured tools [2]