established in 2009. It is a high-tech enterprise specializing in audio and video testing instruments and automatic testing system, which integrates R & D, production and sales. The company is committed to providing professional audio and video R & D and production line testing programs, to achieve intelligence and data informatization. The company has strong R & D strength, not only has a senior instrument software and hardware development team, but also has a full-featured non noise laboratory, which can be used for self product verification and customer product application testing.