| Business | Phone |
| Wheel Doctor 7640 Airpark Rd, Gaithersburg 20879 | (301) 253-5200 |
| Repair Max Inc 8075 Snouffer School Rd, Gaithersburg 20879 | (301) 258-7629 |
| Research Scientific Svc 8200 Exodus Dr, Gaithersburg 20882 | (301) 977-9344 |
| Diversified Laboratory Repair 7515 Rickenbacker Dr, Gaithersburg 20879 | (301) 519-2191 |