Shenzhen Sky Dragon Audio-Video Technology Co., Ltd is a leading manufacturer specializing in A/V products for over 10 years, we have a strong in-house R&D team for all of our products developed from the designs, firmware and electronics, we have been working with many famous companies all over the world such as Wal-mart for USA, K-mart for Australia, Carrefour for France, Argos for UK etc. For more information about our company, you are welcome to visit our company website http://www.samesay.com.