I was kind of on the fence when I first replied. My initial thought was no, not servicing. But after looking at the content and finding no other better clause, it seemed not inappropriate:
...document servicing procedures, reference materials, and reference measurements, as necessary, for performing servicing activities and verifying that product requirements are met.
(use the data) as appropriate, for input to the improvement process.
Records of servicing activities carried out by the organization or its supplier shall be maintained
I think the intent of refurbishment is to ensure it's meeting requirements. It may well NOT be nonconforming so I don't know why that would always be the case (if it is nonconforming then sure!). Regardless of the clause it falls under I think you would likely have procedures and that following refurbishment, you will verify that product requirements are met, and it's probably a good idea to use that data to see if there are any improvements that can be made. (And, of course, you'll need records of the activities.)