Shenzhen Seg Co. Ltd is mainly engaged in the manufacture of color cathode-ray tubes (CCRTs), and is one of the largest producers of 21-inch and 34-ince CCRTs in China. The Shenzhen Segem Electronics Market, a leading player in the electronic products market, and which is operated by the company, is the largest professional electronics component market in Asia. The company is also involved in modern integrated logistics and services including foreign transportation, bonded warehousing services, foreign trade, franchise sales and property rentals as well as the business of research, production and operation of telecommunication products such as GPS and digital trunking communication systems and certain internet-related projects.