Risenta Hearing Group's parent company, Great Northern Group, was founded in 1869 and is the world's first large multinational publicly traded company engaged in communication, telecommunication and hearing medical equipment. The Group's main businesses include hearing aids, hearing test equipment, Bluetooth headsets, and so on. The various products produced by Rishengda Hearing Group and Great Northern Communication Equipment under the Great Northern Group combine the world's top acoustic and audiological technologies, and rely on a strong background in science and technology and the medical industry to make the products functionally equipped with a number of excellent features in the analysis and sound processing. In the speech signal processing, more users present the real speech characteristics. The wide application of many advanced core technologies makes the products of Great Northern Group become the leader in the industry. The Great Northern Group is a high-tech company specializing in professional hearing solutions and personal communication devices. With the world's leading acoustics and audiology technologies and the powerful IT achievements, she is committed to making people's communication smoother and more comfortable.