| Business | Phone |
| Defiance Precision Products 5859 E Executive Dr, Westland 48185 | (734) 467-8371 |
| Dynatest Consulting Inc 5950 E Executive Dr, Westland 48185 | (734) 729-0400 |
| Varga Engineering Inc 38146 Greenwood St, Westland 48185 | (734) 722-1818 |
| Ampen Inc 37656 Palmer Rd, Westland 48186 | (734) 722-1023 |
| David Snowden & Assoc 1536 Ashby St, Westland 48186 | (734) 729-6997 |
| Gni 1642 S Dowling St, Westland 48186 | (734) 721-8312 |
| Jarrett Mills Schron & Assoc 33608 Palmer Rd, Westland 48186 | (734) 722-5530 |
| Powerflow Engineering 37120 Enterprise Dr, Westland 48186 | (734) 595-8400 |
| Robert F Gallagher & Assoc 32430 Grandview Ave, Westland 48186 | (734) 326-5744 |