TENDZONE is the first enterprise specializing in the research and development on digital audio in China. Digital network audio products emerged is an exciting event to professional audio field, which will definitely change the current structure of audio market. And tendzone will also change the original design and procedure of audio system that marks a new digital revolution has already been on the way. To develop te business world wide and provide the best servive rapidly, all Tendzone products covered with 5 years warranty. At present, we have established sales and technical support centre in Shanghai, Shenzhen, Beijing, Guangzhou, Chengdu, Nanjing and Shenyang where consisted with a number of experienced technicians. At same times, a world wide sales and technical support network are under construction.