UPS目前分为在线式和后备式等，目前，主流的UPS厂商为EAST（易事特）、深圳山特、东莞优玛电气UMART、APC、 伊顿、爱默生等，都提供各种级别的UPS满足不同用户群的需要-UPS is currently divided into line and back-up type, such as, at present, the UPS vendor for the mainstream EAST (special easy), S