| Company Name | Address | City | State | Zip Code | Phone Number | Fax Number |
| BAKER TILLY VIRCHOW KRAUSE LLP | 205 N MICHIGAN AVE | CHICAGO | IL | 60601 | (608) 240-2469 | (608) 249-8532 |
| BENFORD BROWN & ASSOCIATES LLC | 8334 S STONY ISLAND AVE | CHICAGO | IL | 60617-1759 | (773) 731-1300 | (773) 731-1301 |
| BIDNET | 20A RAILROAD AVE | ALBANY | NY | 12205 | (800) 677-1997 | (518) 438-0599 |
| BRICKLAYERS' LMCC | 660 N INDUSTRIAL DR | ELMHURST | IL | 60126 | (630) 600-3829 | (630) 600-3835 |
| BRONNER GROUP LLC | 120 N LASALLE ST, STE 1300 | CHICAGO | IL | 60602 | (312) 759-5101 | (999) 999-9999 |
| BUILDERS AVENUE | 1452 E 52ND ST | CHICAGO | IL | 60615 | (708) 232-3919 | (708) 232-3919 |
| CLIFTONLARSONALLEN LLP | 220 S 6TH ST | MINNEAPOLIS | MN | 55402 | (612) 359-7747 | (217) 355-9549 |
| CROWE LLP | 225 W WACKER DR, STE 2600 | CHICAGO | IL | 60604 | (312) 880-4818 | (312) 899-5300 |
| DIAMOND 7 ENTERPRISE INC | 2324 185TH PL | LANSING | IL | 60438 | (708) 932-6417 | (999) 999-9999 |
| INNLEADAIR LLC | 3501 ALGONQUIN RD, STE 850 | ROLLING MEADOWS | IL | 60008-3162 | (847) 534-8452 | (847) 258-9965 |
| KPMG LLP | 200 E RANDOLPH ST STE 5500 | CHICAGO | IL | 60601 | (312) 665-2208 | (312) 277-9052 |
| MACIAS GINI & OCONNELL LLP | 2121 N CALIFORNIA BLVD STE 750 | WALNUT CREEK | CA | 94596 | (925) 395-2818 | (925) 274-3819 |
| MAHARLIKA PLLC | 111 W JACKSON BLVD, STE 1700 | CHICAGO | IL | 60604 | (773) 661-8736 | (999) 999-9999 |
| MCCONNELL JONES LLP | 4828 LOOP CENTRAL DRIVE SUITE 1000 | HOUSTON | TX | 77081 | (708) 597-3795 | (713) 972-6461 |
| NORTH AMERICA PROCUREMENT COUNCIL | P O BOX 40445 | GRAND JUNCTION | CO | 81504 | (302) 450-1923 | (302) 450-1925 |
| PLANTE & MORAN PLLC | 10 S RIVERSIDE PLAZA, STE 900 | CHICAGO | IL | 60606 | (312) 980-2911 | (248) 200-5842 |
| PRADO & RENTERIA CPAs PROF CORP | 1837 S MICHIGAN AVE | CHICAGO | IL | 60616 | (312) 567-1330 | (312) 567-1360 |
| PYRAMID SCHOOL PRODUCTS | 6510 N 54TH ST | TAMPA | FL | 33610 | (813) 621-6446 | (813) 621-7688 |
| RINGOLD FINANCIAL MGMT SVC | 850 S WABASH STE 210 | CHICAGO | IL | 60605 | (312) 566-9705 | (312) 566-9736 |
| RSM US LLP | 20 N MARTINGALE, STE 500 | SCHAUMBURG | IL | 60173 | (847) 413-7070 | (847) 517-7067 |
| SEVEN OUTSOURCE | 113 BARKSDALE PROFESSIONAL CTR | NEWARK | DE | 19711 | (315) 308-7852 | (315) 702-0205 |
| SIKICH LLP | 123 N UPPER WACKER DR, STE 1500 | CHICAGO | IL | 60606 | (312) 648-6651 | (630) 566-8401 |
| SMARTPROCURE INC | 700 W HILLSBORO BLVD, STE 4-100 | DEERFIELD BEACH | FL | 33441 | (888) 998-8675 | (954) 399-7067 |
| SMITH MAINTENANCE CO | 2221 W WALNUT ST, UNIT 2 | CHICAGO | IL | 60612 | (312) 733-4301 | (312) 733-4601 |
| TRUE BELIEVERS COMMUNITY CONNECTION | 459 WEST 79TH ST | CHICAGO | IL | 60620 | (773) 966-5651 | (773) 966-5651 |
| VERTEX | ONE NORTH LASALLE | CHICAGO | IL | 60602 | (312) 925-2873 | (312) 925-2873 |