This page sets the company name, address, phone, and email information that is displayed in the shopping cart.
The developer email is where site error notification emails will be sent in the event of an error on the site.
The company URL should, in most cases, be the same as the site URL, but could be something different should this better fit your situation.
The company email is where all sales notifications will be sent. This is also the email that will be used in the notifications sent to customers.
Remember that this information is what will be visible to your customers, so it should be accurate and be the address that most pertains to them. For example, it may make better sense to have your main sales location information here rather than a corporate office.