| Business | Phone |
| Cri Engineering 28117 W End Rd, Wauconda 60084 | (847) 526-3298 |
| R & A Techniques Inc 118 S Main St, Wauconda 60084 | (847) 382-7475 |
| Fts Inc 1000 Brown St, Wauconda 60084 | (847) 487-9313 |
| Ith Engineering Co Inc 951 N Old Rand Rd, Wauconda 60084 | (847) 550-8165 |