"Full daylighting, sound insulation, ventilation and energy-saving windows"-is a high-tech environmentally friendly noise reduction product jointly developed by Shanghai Shenhua Acoustic Equipment Co., Ltd. and the Institute of Acoustics of Shanghai Tongji University in 2005. The product takes into account the four functions of lighting, sound insulation, ventilation, and energy saving. It follows the human-oriented design concept and solves the contradiction between sound insulation and ventilation. The product is favored by users and highly praised by the society as soon as it is launched. It has successively won many honors such as Shanghai Key New Products, National Comfortable Housing Demonstration Project Selection Products, Shanghai Building Materials Industry Technological Innovation Award, Shanghai Workers Technological Innovation Achievement Award, Shanghai Intelligent Manufacturing, Shanghai Energy-saving Products, etc. The products have been approved by authoritative organizations. Testing has reached the international leading level!