Shenzhen Yuyin Electronic limited Company is a company based in Shenzhen, Guangdong province and was established in 2001. It is a professional manufacturer specializing in electronic tuner and metronome. Since the establishment, Yuyin has stressed on the development and new high technology, and attached important to the protection of intellectual property and the publicity and protection of trademark. Our advanced products such as metronome, tuner, sound generator and other musical instrument accessories have taken out national patents and had law-protected trademark registration.