The C919 model focuses on replication and practical performance, based on the C919 real machine as a prototype, fully restored in proportion, and adapted to various scenarios such as teaching, exhibition, and scientific research in the B2B field. The model adopts a modular design, with detachable body components for easy transportation and installation, while also considering structural stability, which can meet long-term display and training needs. The material selected is high-strength aviation composite material, non-toxic and environmentally friendly, in line with relevant industry standards. The surface spraying process is exquisite, the color is uniform, and the classic appearance of the real machine is restored. The interior of the cockpit is rich in details, with replicated components such as the dashboard and control lever, which can be used as training aids for vocational aviation schools to help students intuitively understand the structure of the aircraft. We have a mature production system that allows for mass production and delivery, and supports personalized customization