Guangdong nebula Sci-tech Development Co., Ltd. was established in 2000; it is a professional enterprise in designing and manufacturing PBX and Wireless PC Card. It contains a good team of skillful engineers. They use the superior compose of hardware and software to make out the best medium size PBX and Wireless PC Card with excellent quality and favorable price. Nebula system is easy to be installed and operated with stable functions. In a short time, this kind of PBX and Wireless PC Card are popular in China. PBX and Wireless PC Card begin to connect with people's daily life, not only in telecom system as before. Many different brands of PBX appear in the telecom market, but the most attractive brand is Nebula. For these years, Nebula is always in the leading part to lead the PBX and Wireless PC Card development direction; it pushed out many practical PBX and Wireless PC Card concerning the new developments of China telecom, such as OGM, Caller ID, IP, Voice mail.