Pipefitting
| Alpha Controls & Services, LLC | 4104 Charles St., Rockford, IL 61108 | (815) 227-4000 | vickieh@alphaacs.com |
| Honeywell Inc. | 37 Kessel Ct., Ste 10, Madison, WI 53711 | (608) 270-6100 | Julie.Mcmahan@honeywell.com |
| Helm | P O Box 690, Freeport, IL 61032 | (815) 235-1955 | traders@helmgroup.com |
| Johnson Controls | 9934 N Alpine Rd, Machesney Park, IL 61115 | (866) 668-0945 | tracy.m.aiello@jci.com |
| Premistar – North | 9933 North Alpine Rd, Machesney Park, IL 61115 | (815) 654-7900 | dkrusemeier@premistar.com |