Android application package for Baidu Netdisk TV, version 1.2.0, labelled as a member edition in the Chinese name. Sized at 27.4 MB, the APK is meant for installation on Android TV boxes or smart TVs to access Baidu cloud storage. It is not a schematic or firmware dump. Repair shops sometimes keep such packages for setting up a TV box after a reset. Install via sideloading from USB storage, and be aware that modified builds from unofficial sources may carry security risks or stop working.
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 @tv_software. Enginerys does not host this file.