A $50.00 gift card to Dupont's Service Center at 28 Sumner Dr. - off Rte. 155 - in Dover, NH. Dupont's was founded in 1958 and has grown to become one of the largest independent automobile service centers in New Hampshire. They offer full service auto repair using the latest in automotive equipment and diagnostic software.  Dupont's services Dover, Durham (UNH), Madbury, Somersworth and Barrington, New Hampshire.