Founded in 1999, it is a large domestic digital audio system integrator for radio stations, and an enterprise focusing on the research and development, production, sales and technical application services of embedded audio and video products.

Letu is an audio brand under Beijing Infumedi Electronic Technology Co., Ltd. and has registered the Lotoo trademark. Since its establishment in 1999, Letu has a domestic professional audio technology research and development team. All its products are based on their own technology and have nearly 20 years of experience in professional audio product research and development, production, sales and technical application services, making Letu a member of the industry. World Professional Audio Design Center. For many years, Letu has been providing world-class professional recording and playback products, and its products are exported to more than 30 countries and regions including the United States, Canada, Singapore, South Korea, Japan, Sweden, Spain, Finland, etc.

"Let China creates audio products that touch the world" is Letu's vision. We attach great importance to the needs of users, constantly improve product design, and have always worked hard to provide consumers with more high-quality and cost-effective products. Letu hopes that everyone in the world can enjoy high-quality digital audio technology products from China.

Infumedi Group, which belongs to Letu, is engaged in the research and development of digital embedded technology of radio and television. It has a deep understanding of audio products and the characteristics of the radio and television industry. It enjoys a high reputation in the field of domestic audio equipment. Its products are CCTV, It is used by various provincial and municipal TV stations and many overseas TV stations.