In the automotive industry, we specialize in the full-link systematic optimization of vehicle NVH (Noise, Vibration, and Harshness), with in-depth coverage of core sound source scenarios including engine compartment radiated noise, chassis assembly vibration noise, aerodynamic wind noise, and road-excited road noise. Through modular customized development of acoustic packages (e.g., zoned layout of sound-absorbing cotton and surface density gradient optimization of sound-insulating felt for different vehicle models), innovative application of high-performance vibration and noise reduction materials (including loss factor matching of composite damping films and modal frequency regulation of lightweight vibration-absorbing alloys), and topological optimization design of structural acoustics (relying on CAE simulation analysis technology to enhance the acoustic performance and optimize the vibration modes of body sheet metal structures and connection joints), we can achieve efficient attenuation of wide-frequency in-vehicle noise, significantly improving the acoustic quietness and riding comfort of the cabin space. Meanwhile, our solutions can help automakers meet high-end acoustic performance standards in niche segments such as new energy vehicles (e.g., drive motor whine suppression, electromagnetic noise control of high-voltage components) and high-end luxury vehicles (e.g., cabin acoustic atmosphere creation, integration and matching of active noise cancellation systems), creating a full-scenario high-quality driving acoustic environment for users from daily commuting to long-distance travel.