7z archive of 1.29 MB whose name refers to MT8223L with a pq suffix. MT8223 is a MediaTek TV SoC family, and pq commonly stands for picture quality data, though the archive contents are not otherwise described. It likely relates to firmware or panel and picture settings for a TV board built on this chip. Extract it and inspect the files before use. If writing anything to a flash chip, check compatibility with your board and back up the original memory first.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @hashmielecom. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.
7-ZipWinRARKeka (macOS)