| Business | Phone |
| Laboratory Commercial Svc 135 W Trail St, Jackson 49201 | (517) 788-2519 |
| Test Laboratories Usa 1317 S Elm Ave, Jackson 49203 | (517) 782-6500 |
| Precise Test Lab 1901 Losey Ave, Jackson 49203 | (517) 787-4539 |
| Nde Technology 3039 S Wooddale Dr, Jackson 49203 | (517) 788-7858 |