CMMB VISION HOLDINGS LIMITD is a Hong Kong-based investment holding company principally engaged in media and transmission businesses. The Company operates through two segments. China Mobile Multimedia Broadcasting (CMMB) segment is engaged in the provision of transmission services and the broadcasting of television programs in CMMB-enabled devices. These devices include handsets, netbooks, dongles and global position system (GPS), among others. It owns ultra high frequency (UHF) spectrum television stations over eight cities in the United States and wireless spectrum network. Trading segment is engaged in the trading of printed circuit board (PCB) materials.