Shenzhen Nanshan District Guangdong No.20 Duo Media Systems No.21 Communication Terminals Equipment No.27 Tong Xin Chuan Shu Equipment No.79 Wu Lines Communication Yi Dong Wu Lines Communication Wu Xian Dian Communication Communication Equipment Duo Media Technology Products Copies Nets Technology Zhi Neng Shou Machines ODM Ling Accessories 高新技术企业 省级高新技术企业 国家高新技术企业