The professional repairer is certified for repairing certain products or product categories by the manufacturer. Due to the certification, the repairer has access to detailed product information and service manuals. The professional repairer repairs on location of the client (using hist serice van) or repairs in-house. A combination with a shop is possible. The same repairer could also play a role in the refurbishment of products. At the other it is quite possible that refurbushment of a product is a specialized job, companies the largest refurbishment volume can do so for the lowest prices. Personel for refurshment is probably easier to find compared with repairers.