Could you clarify or if you need help deciphering specific technical codes found inside it?

: This is a common Polish abbreviation for "sztuka" (piece/unit), suggesting the archive may contain drawings, invoices, or specifications for a specific number of units or individual components.

kV, which is standard for low-voltage power distribution cables.

: A standard compressed folder format used to bundle multiple documents, such as PDFs, CAD drawings, or spreadsheets. Probable Use Cases