After Facebook receives your verification code or business document, they review your info to confirm that it matches public records. Within a few days, you receive a notification or e-mail about your verification status.
Not all pages are verified at the first attempt. Sometimes, documents such as business licences are not accepted, sometimes you have to provide a phone number instead. Important: If verification of a page was denied once, this kind of function is not completely blocked, you may try it again.
In addition to your company presence, your staff should also be present on Facebook. This is important for different reasons: