Fasteners are small, but they are ubiquitous and indispensable "safety guards" in the huge rail transit system.
They silently bear extreme loads and harsh environments, maintaining the structural integrity and functional reliability of key systems such as vehicles, tracks, power supply, and signals.
The rail transit industry has much higher performance requirements for fasteners than the general industrial field. Their selection, manufacturing, installation, and maintenance all follow extremely
strict standards and specifications (such as EN, DIN, ISO, GB, TB, etc.), which is an important cornerstone for ensuring passenger safety and efficient system operation.
