Struggling to find these threads!!!
Work the floor with a suitable stripping agent ( we have wax off) ,looks like you have an existing oil In the floor , this will remove this , if any existing glue left on the surface you can use nitro morse to finish any remaining stuborn glue.
once the floor is fully clean - leave minimum 5 -7 days to fully dry and release all moisture ( most important)
then you can seal with an impregnator first as the guys suggest , we have kf stain stop , if you want a sheen finish as above or we have kf tile polish
Maintain with a suitable tile product - no aggressive cleaners - they will knock your new shine.