D6565 12 Inch 350W Professional Two Way Cabinet speakerDecember 19, 2017D6565 is a professional two way loudspeaker. It matched with 12 inches bass and 1 inch treble drivers, which gives clear and sonorous sounds. This speaker is designed of wide frequency response (55 Hz...view
Features of a Simple and Efficient Paperless Conference SystemSeptember 23, 2021The paperless conference system discusses and emphasizes the concept of paperless and environmental protection. The paperless system not only improves work efficiency, but also has far-reaching signif...view