In July 2026, China achieved a significant milestone by successfully developing its inaugural set of high-precision roundness reference equipment. This breakthrough effectively bridges a critical gap in the nation's roundness measurement traceability system. This accomplishment signifies a quantum leap in China's high-precision roundness measurement sector, elevating its technical prowess to an internationally advanced standard. The equipment is poised to offer robust high-precision measurement traceability support for strategic industries, including aerospace and semiconductor manufacturing. Moreover, it will bolster the national geometric measurement system, playing a pivotal role in propelling China towards becoming a manufacturing and quality powerhouse, and infusing fresh impetus into technological and industrial transformation.

Roundness, a fundamental parameter in geometric form and position tolerances, exerts a direct influence on product performance and assembly quality in high-end manufacturing. By harnessing multiple independent innovative technologies, this equipment has successfully surmounted international technical barriers. It has reduced roundness measurement uncertainty from 20 nanometers to a mere 6 nanometers, achieving autonomous control over core technologies. This breakthrough not only disrupts long-standing foreign monopolies but also establishes a sturdy foundation for complete domestic substitution.