M-6180040200

• Trailer Emergency Relay Valve: A key component of the vehicle braking system. Its main function is to quickly transmit braking signals during emergency braking, shorten the braking response time of the trailer, and improve driving safety. It is commonly used in the braking system of freight trailers.
• Three-Axle Semi-Trailer: The term "axle" refers to the vehicle's axle (including the wheel set). A "three-axle" semi-trailer means a semi-trailer with three sets of axles. This type of vehicle usually has a strong load-carrying capacity and is mostly used for medium-to-long-distance heavy cargo transportation. A "semi-trailer" needs to work with a tractor to operate, which is different from a full trailer that can run independently.