Bietrun is an innovative company,established in 2016, integrating R&D, design, sales and service. Adhere to usercentered, create a professional audio entertainment experience for users through innovative technology and high-quality products.We Committed to the research and development of electro acoustic system:portable microphones, portable recording wireless microphones, wireless audio equipment, home karaoke equipment, conference audio system, stage audio system, recording equipment, etc.We Invest a lot of funds to research and develop technology, owns the international professional electroacoustic technology research and development team and influential brand manufacturers. Through signal shielding, wireless conduction, audio noise reduction, microphone diaphragm technology, continuously improve product quality and users' experience .