We have many kind of models.each have different specification and price.for example ,we have UPS-350N,UPS-500N,UPS-650N,UPS-1000N,FAX UPS.You can look them in our web:

http://www.hongdaelectric.com/bidai/show6%2B%2B.asp?cpfl=UPS

This uninterruptible power system (UPS) is designed for microcomputers.
Our UPS is reliable, uses advanced technology and has a compact size.
It supplies stable AC electric power when the external power supply
is normal. It backs up a 220V high-speed electric power supply when
external power fails or is abnormal. Our UPS also regularizes and
purifies the supplied power when external interferences happen.
As a result,it enables you to protect computer software and data.