Ltd. is headquartered in Zhangjiang hi tech Industrial Park, Jiading, Shanghai, and has R & D center in Hongkong, has offices in Shenzhen. Since its inception in 2004, such as Yun Electronics has been using Fabless mode of operation, focusing on analog integrated circuit design, application and sales, and always at the forefront of technological innovation. The production of the product is commissioned by domestic and overseas well-known wafer foundries, packaging plants and testing companies. These factories and companies are professional and neutral factories, and have passed various international quality system certification.