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About

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Discover CSS

China Simulation Sciences (CSS), founded in 2019 under Juneyao Group, delivers high-standard simulation solutions for global flight training. Guided by the philosophy “Autonomous Software. Open Data. Limitless Applications,” CSS advances aviation simulation with innovation and precision.

Holding dual certifications from EASA and CAAC for Level D full flight simulators — a distinction unmatched in China — CSS has deployed Airbus A320, Boeing B737, and COMAC C909 simulators with 100% in-house core technologies. By 2025, deliveries will exceed ten Level D FFSs.

Beyond civil aviation, CSS is expanding into the low-altitude economy, developing simulation systems for UAVs and eVTOLs. Pursuing the strategy of “Globalized Products with Localized Services,” from civil skies to low-altitude frontiers, CSS delivers trusted simulation solutions worldwide.

Milestones
Our Journey Beyond Simulation
2019
Foundation and Vision
China Simulation Sciences Co., Ltd. (CSS) was officially established in Shanghai, marking the beginning of its journey in flight simulation — embracing the mission of“Superior Simulation Leading Future”.
2020
First CAAC-Certified Level D Simulator Delivered
CSS completed and delivered its first A320 Full Flight Simulator (FFS), certified by the Civil Aviation Administration of China (CAAC) under CCAR-60 as a Level D simulator.
2021
Supporting Domestic Aviation Programs
CSS was selected for major simulation development projects with domestic aircraft manufacturers, contributing to the advancement of China’s aviation training and simulation capabilities.
2022
Strategic Growth
A strategic financing round was completed, strengthening CSS’s foundation for technology innovation and global outreach.
2023
Expanding Horizons
CSS achieved a leading position in national simulator deliveries, serving Airbus, Boeing, and COMAC platforms and opening new international markets.
2024
Dual EASA and CAAC Level D Certifications
The independently developed A320-Neo Full Flight Simulator obtained D-Level certification from both the European Union Aviation Safety Agency (EASA) and CAAC, making CSS the first and only Chinese manufacturer recognized by both authorities. In the same year, CSS launched the Superior Series, a new generation of simulators designed for higher fidelity and performance.
2025
Towards a Global Future
CSS completed the first overseas delivery of a domestically developed level D FFS, marking a milestone in the export of high-end simulation systems. Annual deliveries exceeded ten units, positioning CSS among the world’s leading simulator manufacturers. In the same year, CSS entered the eVTOL training field, developing advanced training solutions for next-gen aviation.
The Road Ahead
CSS plans to establish a wholly owned flight training center in Athens, Greece, building a global service and support network.
Global Presence
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Paris (France)
Athens (Greece)
Xian
Shanghai
Changsha
Guangzhou
Manila (Philippines)
Certifications
25+
Invention patents
25+
34+
Software patents
34+
National Specialized and Innovative (SRDI) “Little Giant” Enterprise
recognized by the Ministry of Industry and Information Technology of China (MIIT)


National Specialized and Innovative (SRDI) “Little Giant” Enterprise
9+
Utility model patents
9+
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