How to send a circle of friends when the property finds the key?

If you are a property owner, you can send a circle of friends like this after finding the key:

"Hello, I am a staff member of [name of property management company]. Today we found a bunch of keys at a certain time. If you are the owner of the key, please contact us and we will serve you wholeheartedly. Thank you! "

Or it can be more specific:

"Hello, everyone, we found a bunch of keys in [specific location]. If you lose your key, please contact us. We have made a note and will contact you as soon as possible. Thank you! "