Project introduction: The joint venture between China Changan and Peugeot Citroen has settled in Shenzhen with a total investment of about 8.5 billion yuan. The first-phase production capacity is 200,000 vehicles and 200,000 engines. The NCC Shenzhen team provides the project with an acoustic laboratory for engine testing and The whole vehicle test acoustic laboratory design, construction and acceptance assembly, the project is designed and constructed in accordance with the European automotive acoustic testing laboratory standards, the project is applied to NCC Shenzhen's high-standard sound insulation walls, extra-long sound insulation windows and doors, as well as ventilation and noise reduction System products, all sound insulation indicators meet the standards, and successfully passed the acceptance of French engineers.