Notes about the PZH file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The PZH file type is primarily associated with 'Presto' by Soft S.A.. [Spanish site] Presto is a construction estimation software. The .PZH format is compacted and usually read-only for faster access.