KZ is a fast-pressure proprietary format, is said to be more than the RAR compression rate, of course, it is said. The KZ format now requires a quick compression to decompress, and you can download and try it. This software is also free software, through Plug-ins can also support the RAR format.
Software Name: Fast pressure
STEP01: After the installation of fast pressure, you will be prompted to associate the compression format. If you install only one compression software, choose "full trainer." If you still have winrar or 7 or zip, just select the "KZ" format here.
STEP02: Click "Settings" on the "Options" menu to set the default configuration. For example, set the compression ratio, the default folder, whether the Activation Wizard is enabled at startup, as the system default compression software, and so on.