We are the professional manufacturer of visual presenter and PA system(amplifier, microphone etc.) from China. We have been doing visual presenter for over a decade. I am here sending you this email to see if we can be your future supplier. Our visual presenters on-sale include DN-1000/ DN-1020/ DN-1010/ DN-1030/ DN-1050/ DN-1080. Basic functions: Freeze, Black & White, Negative, Baselight compensation, Mirror, Brightness adjustment, Text, Contrast, Initialize, 20 Images storage, Dynamic and static. New features: Mode save/recall, Central control, HDMI, 16:9 display etc, with decent outlook and stable quality. The PA system product includes: amplifier, central control, net work Microphone, speaker etc. As the founder of Public Address System of China market, we have over 15 years history and the biggest market share with advanced technology and innovation. We has 3 factories (visual presenter, amplifier and stage loudspeaker), 1 marketing center and 1 R&D center. We are in close connection with partners worldwidely. Our product has a very popular reputation among our customers.