On May 11, 2026, the civil aviation radial tires independently developed by Triangle Tyre successfully passed the review of the Civil Aviation Administration of China (CAAC) and were awarded the China Civil Aviation Technical Standard Order Authorization (CTSOA), backed by exceptional performance throughout the process and across all elements.

CTSOA serves as the CAAC’s official approval for the design and production of aviation components. The award of CTSOA certification signifies that the certificate holder has successfully passed the authority’s “design and production conformity review”, earning the qualifications to design and manufacture the certified products, along with the authorization to mark them with the corresponding CTSO identification numbers.

The CTSOA certification awarded to Triangle Tyre covers four part numbers of civil aviation radial tires, specifically developed for leading aircraft models, including China’s domestically produced large passenger jet C919 and the Airbus A320.

As critical safety components, aviation tires are among the most technologically demanding products in the aviation industry, subject to exceptionally stringent review standards and lengthy approval processes. The CAAC’s certification process involves comprehensive on-site oversight across manufacturing, testing, and other critical stages, requiring passing of a series of rigorous evaluations, including static load testing, high-speed rolling tests, and extreme-temperature performance assessments, while demonstrating super-high professional capabilities in core areas such as material, design, process, equipment, simulation, and quality control.

Triangle Tyre’s attainment of CTSOA certification underscores the Company’s proven strengths in technology development, manufacturing, testing and inspection, and quality management, all of which have withstood comprehensive and rigorous regulatory scrutiny. This achievement not only demonstrates the maturity and reliability of the Company’s operational systems but also highlights the team’s extensive expertise and proven capabilities in product development, end-to-end quality assurance, and regulatory compliance.

To overcome technological barriers and break international monopolies, Triangle Tyre launched dedicated research initiatives into key aviation radial tire technologies as early as 2017. The Company has since achieved breakthroughs in high-performance framework materials, product structural design, and building equipment development, establishing a fully independent core technology platform, a comprehensive intellectual property portfolio, and an airworthiness-compliant quality management system. With robust technical innovation capabilities, a comprehensive quality assurance system, and advanced equipment development expertise, Triangle Tyre has built a fully integrated ecosystem covering design, manufacturing, system operation, and airworthiness certification, paving the way for the large-scale industrialization of aviation tires.

For over five decades, Triangle Tyre has remained committed to its core tire business, driven by independent innovation, proprietary brand development, and steady, innovation-led growth, while continuously expanding its portfolio of premium tire solutions across diverse categories and applications. The successful development of aviation tires and the achievement of CTSOA certification have reinforced the security and self-reliance of the aviation supply chain, while propelling Chinese tire brands toward new heights in the global high-end market.

[Aviation Tire Milestones]

In October 2014, Triangle Tyre completed splash simulation analysis for tires for the COMAC ARJ21 regional aircraft (now C909), helping pave the way for the aircraft’s all-weather airworthiness certification.

In 2019, Triangle Tyre further expanded cooperation with COMAC, undertaking the research on numerical simulation models for the dynamic characteristics of main tires for the C919 aircraft.

In April 2019, the Triangle aviation tire project received approval support under Shandong Province’s Major Program for New and Old Kinetic Energy Conversion.

In October 2019, the “Large Aircraft Ground Dynamics Joint Laboratory”, initiated by COMAC, was established in Changsha, with Triangle undertaking the research on the “Tire Ground Dynamics” program.

In July 2020, Triangle’s independently developed 30×8.8R15 aviation tire passed dynamic simulation testing in Xianyang, becoming the first civil aviation radial tire product in China to achieve this milestone.

In September 2020, Triangle Tyre’s aviation tire laboratory, with an investment exceeding RMB 50 million, was completed and put into operation in Weihai.

In August 2021, Triangle Tyre built a full civil aviation radial tire production line in Weihai, passing project acceptance and establishing large-scale manufacturing capability.

In September 2022, the Triangle aviation radial tire project was awarded the Gold Award at the 4th “Governor’s Cup” Industrial Design Competition.

In May 2026, Triangle’s civil aviation radial tires passed the CAAC review and were awarded the CTSOA certification.