High-speed rail and urban transit systems enforce the most stringent fire safety standards for passenger protection, while undercarriage wiring must constantly resist diesel fuel degradation and track vibration. Our flame-retardant insulation and vibration-proof splicing solutions perfectly align with these harsh requirements. They are extensively applied in low-smoke, zero-halogen (LSZH) wrapping for cabin control wires, oil-resistant protection for undercarriage harnesses, and high-strength, anti-loosening splicing for locomotive signal control systems. Meeting the highest international railway fire safety levels (emitting ultra-low, non-toxic smoke during a fire), we ensure unwavering electrical continuity amidst continuous high-speed transit vibrations.