A brake pad is a key component in a vehicle's disc brake system, placed inside the caliper. When the brake pedal is pressed, hydraulic pressure pushes the caliper piston to squeeze the brake pad against the disc (rotor) on both sides, generating friction. This friction converts the vehicle's kinetic energy into heat, slowing down or stopping the car. Brake pads are made from various materials such as semi-metallic, ceramic, and low-metallic compounds, offering durability and consistent braking performance. Since brake pads wear out over time, regular inspection and timely replacement are essential for safe driving.

A tie rod is an essential component of an automobile's steering system, connecting the steering rack (or steering gear) to the wheels and accurately transmitting the driver's input from the steering wheel to the wheels. When the steering wheel is turned, the tie rod transfers this force to the wheels, enabling the vehicle to change direction as intended. Composed of inner and outer tie rods, the tie rod maintains proper wheel alignment and straight-line stability, ensuring precise handling and safe driving. Acting similarly to a wrist, tie rods play a crucial role in steering response and vehicle stability, so regular inspection and replacement are necessary when worn or faulty.

An air spring is a suspension part that replaces traditional coil or leaf springs, featuring a rubber bellow filled with compressed air. By regulating air pressure, the air spring maintains consistent vehicle height depending on the load and effectively absorbs road shocks and vibrations. Integrated with components such as compressors, air reservoirs, and valves, air springs allow active adjustment of ride height and comfort. This technology is widely used in commercial vehicles, buses, and luxury passenger cars, offering superior comfort and load adaptability for both drivers and passengers.

The propeller shaft, also known as a drive shaft, is a component used to smoothly transmit rotational power from the engine or transmission to the wheels (in vehicles) or the propeller (in boats).​

It is usually manufactured from high-strength materials such as steel, aluminum alloy, or carbon fiber for durability and load-bearing capability.​

Key functions include transmitting torque, absorbing vibration and shock, and accommodating slight misalignments between mounting positions.​

Core structural parts include the universal joint, sliding joint, mounting yoke, and center bearing assembly, with various product variants tailored to specific requirements like torque, length, and mounting options.​

It is mainly used in commercial heavy vehicles and marine applications, with product specifications detailed by torque capacity, length, configuration, and mounting interface.​

A caliper is a key component of automotive and commercial vehicle brake systems. It operates by hydraulic brake fluid, forcing brake pads to clamp against both sides of the disc, creating friction to decelerate or stop the vehicle. Calipers come in two main types: fixed and floating (sliding). Fixed calipers have pistons on both sides and simultaneously clamp the pads, while floating calipers use a single set of pistons that push one pad, with reaction force pressing the other pad. Modern calipers are modular and can be customized to different vehicle grades. Newer models are designed to reduce drag and optimize NVH (Noise, Vibration, and Harshness) through advanced engineering features.

The torque rod is a suspension component that connects the axle and the chassis (frame) of heavy-duty trucks and buses. It absorbs and transmits the torque (twisting force) and reaction forces generated during accelerating, decelerating, and braking, keeping the axle aligned and the vehicle stable. By maintaining precise axle geometry, torque rods significantly improve ride comfort, handling, and overall vehicle stability. They are usually made from strong materials such as steel to ensure durability and reliability, even in harsh operating conditions.

The hub is a central auto part that connects the axle and the wheel, allowing the wheel to rotate smoothly and supporting the vehicle's weight while transmitting driving force from the drive shaft. It contains a bearing assembly that minimizes friction, enabling the wheel to turn freely. Modern hubs are often produced as integrated assemblies, including hub bolts, hub nuts, and sometimes ABS sensors or brake discs. They are made from durable, wear-resistant materials to ensure reliability, stability, and easy maintenance.

A leaf spring is a suspension component made by stacking several layers of steel plates (leaves) of varying lengths. It is mainly used in heavy-duty vehicles such as trucks, buses, and railway cars, fitted between the axle and the chassis. The leaf spring supports the weight of the vehicle while effectively absorbing shocks and vibrations from the road. Its simple and durable design makes it ideal for large vehicles, especially those with heavy loads or that operate in rough conditions. For enhanced efficiency and ride comfort, various designs such as semi-elliptic and parabolic leaf springs are now commonly used.

The V-stay (V-rod) is a V-shaped suspension component used in heavy-duty trucks and buses to connect the axle and the chassis (frame). The V-stay controls unwanted axle movements during driving, acceleration, or braking, maintaining the proper position and angle of the axle to improve vehicle stability. It is made from materials such as high-strength steel for durability, providing excellent performance even in off-road and high-load conditions.

A brake pad is a key component in a vehicle's disc brake system, placed inside the caliper. When the brake pedal is pressed, hydraulic pressure pushes the caliper piston to squeeze the brake pad against the disc (rotor) on both sides, generating friction. This friction converts the vehicle's kinetic energy into heat, slowing down or stopping the car. Brake pads are made from various materials such as semi-metallic, ceramic, and low-metallic compounds, offering durability and consistent braking performance. Since brake pads wear out over time, regular inspection and timely replacement are essential for safe driving.

A tie rod is an essential component of an automobile's steering system, connecting the steering rack (or steering gear) to the wheels and accurately transmitting the driver's input from the steering wheel to the wheels. When the steering wheel is turned, the tie rod transfers this force to the wheels, enabling the vehicle to change direction as intended. Composed of inner and outer tie rods, the tie rod maintains proper wheel alignment and straight-line stability, ensuring precise handling and safe driving. Acting similarly to a wrist, tie rods play a crucial role in steering response and vehicle stability, so regular inspection and replacement are necessary when worn or faulty.

An air spring is a suspension part that replaces traditional coil or leaf springs, featuring a rubber bellow filled with compressed air. By regulating air pressure, the air spring maintains consistent vehicle height depending on the load and effectively absorbs road shocks and vibrations. Integrated with components such as compressors, air reservoirs, and valves, air springs allow active adjustment of ride height and comfort. This technology is widely used in commercial vehicles, buses, and luxury passenger cars, offering superior comfort and load adaptability for both drivers and passengers.