| Company Name | Address | City | State | Zip Code | Phone Number | Fax Number |
| AIRYS INC | 7455 W DUVAN DR | TINLEY PARK | IL | 60477 | (708) 429-0660 | (708) 729-0795 |
| BCE-USA LLC | 3500 MARTENS ST | FRANKLIN PARK | IL | 60131 | (815) 556-8037 | (815) 556-8076 |
| BENCHMARK CONSTRUCTION CO INC | 2260 SOUTHWIND BLVD | BARTLETT | IL | 60103 | (630) 497-1700 | (630) 497-1737 |
| 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 |
| CARDINAL STATE LLC | 1719 SPRING CREEK RD | BARRINGTON HILLS | IL | 60010 | (630) 808-3146 | (630) 326-8142 |
| CIVIL & ENVIRONMENTAL | 555 BUTTERFIELD RD, STE 300 | LOMBARD | IL | 60148 | (630) 963-6026 | (630) 963-6027 |
| CONNELLY ELECTRIC | 40 S ADDISON RD, STE 100 | ADDISON | IL | 60101 | (630) 543-9059 | (630) 543-9077 |
| CONSTRUCT CONNECT | 30 TECHNOLOGY PKWY S, STE 100 | NORCROSS | GA | 30092 | (800) 364-2059 | (866) 570-8187 |
| DATABID | 433 PENN ST | NEWTOWN | PA | 18940 | (888) 929-3282 | (888) 929-9293 |
| ENVIROBIDNET.COM | 24123 PEACHLAND BLVD C-4 310 | PORT CHARLOTTE | FL | 33954 | (888) 888-0900 | |
| ENVIRONMENT MECHANICAL SERVICES INC | 2500 S 27TH AVE | BROADVIEW | IL | 60155 | (708) 345-1555 | (708) 681-8574 |
| EPLAN ONLINE PLANROOM | 1400 FORUM BLVD, STE 7B | COLUMBIA | IL | 65203 | (573) 447-7130 | (573) 355-5405 |
| FORSGREN CONSTRUCTION CO LLC | 3195 DEER RUN PVT | MARNE | MI | 49345 | (616) 677-6069 | (616) 677-6069 |
| FOUNDATION MECHANICS, LLC | 8604 W CATALPA AVE, STE 907 | CHICAGO | IL | 60656 | 773-234-3087 | 815-301-3738 |
| GABY IRON AND METAL | 2611 EAST END AVE | CHICAGO HEIGHTS | IL | 60411 | (708) 755-1930 | (708) 755-1934 |
| GEWALT HAMILTON ASSOCIATES INC | 625 FOREST EDGE DR | VERNON HILLS | IL | 60061 | (847) 478-9700 | (847) 478-9701 |
| GWO TRUCKING INC | 1035 W 111TH ST, UNIT 3 | CHICAGO | IL | 60643 | (708) 330-4425 | (708) 330-4423 |
| HEY & ASSOCIATES INC | 26575 W COMMERCE DR, STE 601 | VOLO | IL | 60073 | (847) 740-0888 | (847) 740-2888 |
| IES SOLUTION | 13435 KOLMAR AVE | CRESTWOOD | IL | 60445 | (708) 926-9588 | (708) 926-9251 |
| IHC CONSTRUCTION CO LLC | 385 AIRPORT RD, STE 100 | ELGIN | IL | 60123 | (847) 742-1516 | (847) 742-6610 |
| JCI INDUSTRIES LLC | 1161 SE HAMBLEN RD | LEES SUMMIT | MO | 64081 | (816) 525-3320 | (816) 525-5881 |
| JOHN BURNS CONSTRUCTION CO | 17601 SOUTHWEST HWY | ORLAND PARK | IL | 60467 | (708) 326-3500 | (708) 479-4956 |
| JOHN KENO & CO INC | 8623 W BRYN MAWR AVE # 501 | CHICAGO | IL | 60631 | (773) 380-0700 | (773) 380-0706 |
| JUDLAU CONTRACTING INC | 1011 WARRENVILLE RD, STE 475 | LISLE | IL | 60532 | (718) 554-2320 | (331) 777-5771 |
| K-FIVE CONSTRUCTION CORP | 999 OAKMONT PLAZA DR, STE 200 | WESTMONT | IL | 60559-5517 | (630) 257-5600 | (630) 257-6788 |
| LINDAHL BROTHERS INC | 622 E GREEN ST | BENSENVILLE | IL | 60106-2579 | (630) 595-1080 | (630) 595-0976 |
| NORTH AMERICA PROCUREMENT COUNCIL | P O BOX 40445 | GRAND JUNCTION | CO | 81504 | (302) 450-1923 | (302) 450-1925 |
| PAN OCEANIC ENGINEERING CO INC | 6436 W HIGGINS RD | CHICAGO | IL | 60656 | (773) 601-8408 | (773) 601-8409 |
| PRIME VENDOR INC | 4622 CEDAR AVE, BLDG 5, STE 123 | WILMINGTON | NC | 28403-6916 | (800) 746-9554 | (910) 726-1973 |
| REYES GROUP LTD | 15515 S CRAWFORD AVE | MARKHAM | IL | 60428 | (708) 596-7100 | (708) 596-7184 |
| SCHWARTZ EXCAVATING INC | 7023 WILLOW SPRINGS RD, STE 103 | COUNTRYSIDE | IL | 60525 | (708) 639-4145 | (708) 639-4138 |
| SHE CONSULTING GROUP LLC | 205 N MICHIGAN AVE, SUITE 810 | CHICAGO | IL | 60601 | (312) 569-0226 | (630) 596-2314 |
| SMARTPROCURE INC | 700 W HILLSBORO BLVD, STE 4-100 | DEERFIELD BEACH | FL | 33441 | (888) 998-8675 | (954) 399-7067 |