Ningbo Aier Ventilation Equipment Co., Ltd (Yuyao Jingqiao Hardware Factory), established in 1997, is a leading manufacturer of metal stamping products in China. Located in Yuyao City near Shanghai and Ningbo ports, our 25,000 square meter factory specializes in high-quality ventilation products like iris dampers, metal air valves, and ceiling swirl diffusers. With over 250 skilled staff and a strong engineering team, we export primarily to Europe and North America. We are committed to outstanding customer service, competitive pricing, and continuous improvement, aiming to be a trusted industry leader through responsibility and perseverance.