| Company Name | Address | City | State | Zip Code | Phone Number | Fax Number |
| ALLIED INSTRUMENTATION | 9839 INDUSTRIAL COURT, SUITE B | HIGHLAND | IN | 46322 | (219) 924-4545 | (219) 924-5011 |
| ANDERSON & CO INC, A A, D/B/A | 960 OAK CREEK DR | LOMBARD | IL | 60148 | (630) 782-6834 | (630) 782-6835 |
| APEX ENGINEERING PRODUCTS | 1241 SHORELINE DR | AURORA | IL | 60504 | (630) 820-8888 | (630) 820-8886 |
| BIDNET | 20A RAILROAD AVE | ALBANY | NY | 12205 | (800) 677-1997 | (518) 438-0599 |
| BLACKRIDGE RESEARCH & CONSULTING | 4041 W HOLLOW CREEK DR | PEORIA | IL | 61615 | (917) 993-7467 | (917) 993-7467 |
| BOERGER LLC | 2860 WATER TOWER PL | CHANHASSEN | MN | 55317 | (612) 590-0281 | (612) 435-7329 |
| CARTER PUMP | 326 S DEAN ST | ENGLEWOOD | NJ | 07631 | (201) 568-9798 | (201) 444-4629 |
| DATABID | 433 PENN ST | NEWTOWN | PA | 18940 | (888) 929-3282 | (888) 929-9293 |
| DRIVE SOURCE | 7900 DURAND AVE. BLDG 31 | STURTEVANT | WI | 53177 | (262) 331-9039 | (262) 554-7977 |
| ENVIROBIDNET.COM | 24123 PEACHLAND BLVD C-4 310 | PORT CHARLOTTE | FL | 33954 | (888) 888-0900 | 999-999-9999 |
| FLOW-TECHNICS INC | 181 ONTARIO ST | FRANKFORT | IL | 60423 | (815) 277-2600 | (815) 534-5311 |
| GASVODA & ASSOCIATES INC | 1530 HUNTINGTON DR | CALUMET CITY | IL | 60409 | (708) 891-4400 | (312) 894-1138 |
| HELM ELECTRICAL SERVICES INC | 5303 9TH AVE | COUNTRYSIDE | IL | 60525 | (708) 579-1000 | (708) 579-1198 |
| IHC CONSTRUCTION CO LLC | 385 AIRPORT RD, STE 100 | ELGIN | IL | 60123 | (847) 742-1516 | (847) 742-6610 |
| INDEPENDENT MECHANICAL | 2671 UNITED LN | ELK GROVE VILLAGE | IL | 60007 | (773) 243-0575 | (773) 496-8136 |
| INDI ENTERPRISE INC | 535 CHIPPEWA TR | CAROL STREAM | IL | 60188-1589 | (630) 462-6980 | (630) 868-3861 |
| JOHN BURNS CONSTRUCTION COMPANY LLC | 999 OAKMONT PLAZA DR, SUITE 400 | WESTMONT | IL | 60559 | (708) 326-3500 | (000) 000-0000 |
| JOSEPH J. HENDERSON & SON | 4288 OLD GRAND AVE | GURNEE | IL | 60031 | (847) 244-3222 | (847) 244-9572 |
| JUDLAU CONTRACTING INC | 1011 WARRENVILLE RD, STE 475 | LISLE | IL | 60532 | (718) 554-2320 | (331) 777-5771 |
| KSB INC | 4415 SARELLEN RD | HENRICO | VA | 23231 | (804) 222-1818 | (804) 226-6961 |
| L & S ELECTRIC INC | 5101 MESKER ST | SCHOFIELD | WI | 54476 | (715) 241-3202 | (715) 355-5931 |
| ORNELAS CONSTRUCTION COMPANY | 12520 W HORSESHOE DR | NEW LENOX | IL | 60451 | (815) 462-7600 | (815) 462-7601 |
| SRN TESTING SERVICES | 2258 SOUTHWIND BLVD | BARTLETT | IL | 60103 | (630) 503-5002 | (630) 503-5002 |
| STEEL SERVICES ENTERPRISES INC | 17500 S PAXTON AVE | LANSING | IL | 60438 | (847) 226-4533 | (708) 418-1639 |
| XYLEM WATER SOLUTIONS USA, INC | 9661 194TH ST | MOKENA | IL | 60448 | (708) 889-1560 | (708) 342-0491 |