Audio Systems: Including radios, CD/DVD players, digital media interfaces, etc. These products provide in-car entertainment and impact audio quality experience.

Speakers and Subwoofers: Devices used for audio playback, including door speakers, speaker boxes, etc. Their design and installation method influence sound quality and volume performance.

Power Amplifiers: Devices used to boost the power of audio signals, enhancing sound quality and volume. Power amplifiers can be installed separately or integrated with the original car audio system.

Audio Interfaces and Connection Devices: Including audio cables, adapters, connectors, etc., used to connect various audio devices and ensure signal transmission quality.

Accessories and Decorations: Such as audio equalizers, lighting effects, decorative panels, etc., used to enhance the functionality and aesthetics of the in-car audio system.