| Business | Phone |
| Astrue Consulting Svc 1901 Ne 162nd Ave, Vancouver 98684 | (360) 798-2132 |
| Audio Test Engrg Consltng Svc 1017 Se 102nd Ave, Vancouver 98664 | (360) 885-0893 |
| Construction & Design Svc 7535 Ne 25th St, Vancouver 98662 | (360) 885-1120 |
| David E Watts Consulting Svc 2408 E 33rd St, Vancouver 98663 | (360) 699-3044 |
| David Kelly Traffic Engineer 12202 Ne 24th St, Vancouver 98684 | (360) 892-5740 |
| Edan Engineering Corp 900 Washington St 830, Vancouver 98660 | (360) 750-4842 |
| Geo Design Inc 1201 Se Tech Center Dr, Vancouver 98683 | (360) 693-8416 |
| Storch Corp 6305 Se Riverside Dr, Vancouver 98661 | (360) 694-0335 |
| Tri-En Corp 110 Columbia St, Vancouver 98660 | (360) 735-0092 |
| Triaxis Engineering Inc 301 Ne 117th Ave, Vancouver 98684 | (360) 260-3900 |
| Universal Dynamics 12009 Ne 99th St # 1470, Vancouver 98682 | (360) 253-2793 |
| Oasis Alignment Svc Inc 3800 Ne 68th St A3, Vancouver 98661 | (360) 735-0480 |
| Odell Engineering 500 W 8th St, Vancouver 98660 | (360) 699-6631 |
| Progressive Consultants Inc 11805 Ne 99th St 1380, Vancouver 98682 | (360) 254-8400 |