| Business | Phone |
| Clima Tech Corp 4107 Se International Way #703, Portland 97222 | (503) 650-8482 |
| Meacon Corp 3990 Se International Way, Portland 97222 | (503) 654-3366 |
| Aurthur Forsyth Co 2041 Sw 58th St, Portland 97225 | (503) 297-1028 |
| Arras Systems 1200 Nw Naito Pkwy # 200, Portland 97209 | (503) 241-0315 |
| Technical Marine Svc 6040 N Cutter Cir # 302, Portland 97217 | (503) 285-8947 |
| Cascade Hydro-Air Po Box 10894, Portland 97296 | (503) 224-1100 |
| Control Contractors Inc 5000 Se 25th Ave, Portland 97202 | (503) 231-0421 |
| Pacific Control Supply Inc 2617 Ne Columbia Blvd, Portland 97211 | (503) 249-2033 |
| Motion Control Systems Portland 97219 | (503) 244-0503 |
| Minarik Corp Automation 7515 Ne Ambassador Pl # R, Portland 97220 | (503) 528-0200 |
| Control Elements Inc 7625 Sw Oleson Rd, Portland 97223 | (503) 244-9711 |
| Micro Switch Div 15495 Sw Sequoia Pkwy # 100, Portland 97224 | (503) 968-3311 |