| Company Name | Address | City | State | Zip Code | Phone Number | Fax Number |
| 5150 INC D/B/A BERG-JOHNSON | 1000 WESTGATE DR, STE 151 | ST PAUL | MN | 55114 | (952) 941-5400 | (999) 999-9999 |
| ACURA INC | 556 COUNTY LINE RD | BENSENVILLE | IL | 60106 | (630) 766-9979 | (630) 766-6826 |
| ALDRIDGE ELECTRIC INC | 844 E ROCKLAND RD | LIBERTYVILLE | IL | 60048 | (847) 247-5214 | (847) 680-5233 |
| AMEX NOOTER LLC | 1160 HAMILTON AVE | UNIVERSITY PARK | IL | 60484 | (708) 429-8300 | (708) 429-8310 |
| ARC AMERICAN INC | 311 S INDIANA AVE | WAKARUSA | IN | 46573 | (574) 862-1920 | (574) 862-1920 |
| 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 |
| BROADWAY ELECTRIC INC | 831 OAKTON | ELK GROVE VILLAGE | IL | 60007-1904 | (847) 593-0001 | (847) 593-0004 |
| BURNS & MCDONNELL ENGINEERING | 200 W ADAMS, STE 2700 | CHICAGO | IL | 60606 | (816) 333-9400 | (630) 724-3201 |
| CHICAGOLAND | PO BOX 3533 | PEORIA | IL | 61612 | (309) 401-6167 | (309) 401-6168 |
| CONNEXION | 353 HASTINGS DR | BUFFALO GROVE | IL | 60089 | (847) 499-8300 | (847) 499-8301 |
| CONSTRUCT CONNECT | 30 TECHNOLOGY PKWY S, STE 100 | NORCROSS | GA | 30092 | (800) 364-2059 | (866) 570-8187 |
| CORE & MAIN LP | 3415 OHIO ST | ST CHARLES | IL | 60174 | (630) 665-1800 | (999) 999-9999 |
| CRAFT MECHANICAL LLC | 4639 W ARMITAGE AVE | CHICAGO | IL | 60639 | (630) 863-3371 | (999) 999-9999 |
| DAHME MECHANICAL INDUSTRIES INC | 610 S ARTHUR AVE | ARLINGTON HTS | IL | 60005 | (847) 253-0341 | (847) 253-9501 |
| DATABID | 433 PENN ST | NEWTOWN | PA | 18940 | (888) 929-3282 | (888) 929-9293 |
| DELTEK INC | 2291 WOOD OAK DR | HERNDON | VA | 20171-2823 | (703) 734-8606 | (703) 734-0346 |
| DND ELECTRIC INC | 1111 E TOUHY AVE, STE 260 | DES PLAINES | IL | 60018 | (630) 585-0933 | (630) 585-0314 |
| DRYDON EQUIPMENT, A DXP COMPANY | 2445 WESTFIELD DR, SUITE 100 | ELGIN | IL | 60124 | (630) 465-4909 | (224) 629-4061 |
| EATON CORP | 210 WINDY PT DR | GLENDALE HTS | IL | 60139 | (630) 260-6300 | (630) 260-6810 |
| EMERSON PROCESS MANAGEMENT POWER | 2507 LOVI RD BLDG 3/3A | FREEDOM | PA | 15042 | (708) 381-9436 | 999-999-9999 |
| EPLAN ONLINE PLANROOM | 1400 FORUM BLVD, STE 7B | COLUMBIA | IL | 65203 | (573) 447-7130 | (573) 355-5405 |
| FH PASCHEN, SN NIELSEN & | 5515 N EAST RIVER RD | CHICAGO | IL | 60656-1113 | (773) 444-3474 | (773) 693-0064 |
| GASVODA & ASSOCIATES INC | 1530 HUNTINGTON DR | CALUMET CITY | IL | 60409 | (708) 891-4400 | (312) 894-1138 |
| GEORGE SOLLITT CONSTRUCTION | 185 HANSEN COURT | WOOD DALE | IL | 60191 | (630) 860-7333 | (630) 860-7347 |
| GWV ENGINEERS INC | 207 E OHIO ST, #303 | CHICAGO | IL | 60611 | (312) 507-9647 | (999) 999-9999 |
| HARRINGTON INDUSTRIAL PLASTICS LLC | 1020 DAVEY RD, STE 700 | WOODRIDGE | IL | 60517 | (630) 972-5570 | (630) 972-5571 |
| 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 |
| INNOVATIVE WERKS INC | 4 KITE COURT | BOLINGBROOK | IL | 60490 | (312) 767-8618 | (630) 689-9492 |
| INTREN | 18202 W UNION RD | UNIION | IL | 60180 | (224) 454-4855 | (224) 454-4855 |
| JOHN BURNS CONSTRUCTION COMPANY LLC | 999 OAKMONT PLAZA DR, SUITE 400 | WESTMONT | IL | 60559 | (708) 326-3500 | (000) 000-0000 |
| JOHNSON CONTROLS INC | 3007 MALMO DR | ARLINGTON HEIGHTS | IL | 60005 | (847) 545-5623 | (847) 364-1536 |
| JUDLAU CONTRACTING INC | 1011 WARRENVILLE RD, STE 475 | LISLE | IL | 60532 | (718) 554-2320 | (331) 777-5771 |
| KALETECH LLC | 3831 MCCOY DR, #109 | AURORA | IL | 60504 | (630) 853-2533 | (630) 604-2344 |
| LAI LLC | 5400 NEWPORT DR, STE 10 | ROLLING MEADOWS | IL | 60008 | (847) 392-0990 | (847) 392-1095 |
| LEOPARDO COMPANIES INC | 120 S RIVERSIDE PLAZA, SUITE 2150 | CHICAGO | IL | 60606 | (224) 279-7367 | (847) 783-3001 |
| LOPEZ INDUSTRIES INC | 9425 S KENTON AVE | OAK LAWN | IL | 60453 | (773) 851-0735 | (999) 999-9999 |
| M J ELECTRIC | 108 INDUSTRIAL DR | MINOOKA | IL | 60447 | (906) 239-6130 | (906) 779-4217 |
| MAMAN CORP | 1055 ARTHUR AVE | ELK GROVE VILLAGE | IL | 60007 | (847) 812-1745 | (847) 358-2682 |
| MAZARINI INC | 100 S BUFFALO GROVE RD, STE 208 | BUFFALO GROVE | IL | 60089 | (773) 707-7170 | (312) 210-9562 |
| MJS | 1301 W 22ND | OAK BROOK | IL | 60523 | (833) 626-3700 | (833) 626-3700 |
| NORTH AMERICA PROCUREMENT COUNCIL | P O BOX 40445 | GRAND JUNCTION | CO | 81504 | (302) 450-1923 | (302) 450-1925 |
| NOWELL STEEL BUIDLINGS | PO BOX 50845 | SUMMERVILLE | SC | 29485 | (843) 670-0220 | (000) 000-0000 |
| PATH CONSTRUCTION COMPANY INC | 125 E ALGONQUIN RD | ARLINGTON HEIGHTS | IL | 60005 | (847) 398-7100 | (847) 398-7101 |
| PETERSON AND MATZ, INC. | 757 S 8TH ST | WEST DUNDEE | IL | 60118 | (847) 844-4405 | (847) 844-4409 |
| PLOTE CONSTRUCTION INC | 1100 BRANDT DR | HOFFMAN ESTATES | IL | 60192 | (847) 695-9300 | (999) 999-9999 |
| SCHNEIDER ELECTRIC USA | ONE BOSTON PLACE, STE 2700 | BOSTON | MA | 02108 | (314) 330-7807 | (999) 999-9999 |
| SIEMENS INDUSTRY INC | 1701 GOLF ROAD, STE 3-500 | ROLLING MEADOWS | IL | 60008 | (847) 803-2700 | (847) 803-2733 |
| SMARTPROCURE INC | 700 W HILLSBORO BLVD, STE 4-100 | DEERFIELD BEACH | FL | 33441 | (888) 998-8675 | (954) 399-7067 |
| SOLING, C E & ASSOC LLC | 1121 VIRGINIA AVE | LIBERTYVILLE | IL | 60048 | (847) 406-8493 | (847) 406-8493 |
| SUNRISE ELECTRIC SUPPLY INC | 130 S ADDISON RD | ADDISION | IL | 60101 | (630) 543-1111 | (630) 543-1678 |
| SYNAGRO CENTRAL LLC | 435 WILLIAMS CT, STE 100 | BALTIMORE | MD | 21220 | (443) 489-9000 | (443) 489-9042 |
| VALOR CONSTRUCTION SERVICES INC | 110 W WOODSTOCK ST | CRYSTAL LAKE | IL | 60014 | (219) 306-2558 | (219) 306-2558 |
| VECTOR CORROSION TECHNOLOGIES | 2504 MAIN AVENUE WEST | WEST FARGO | ND | 58078 | (612) 248-5651 | (612) 248-5651 |
| VICTAULIC | 4901 KESSLERSVILLE RD | EASTON | PA | 18040 | (616) 450-6358 | (999) 999-9999 |
| W. E. ONEIL CONSTRUCTION CO | 1245 W WASHINGTON BLVD | CHICAGO | IL | 60607 | (773) 755-1611 | (773) 584-0866 |
| WILLIAM T CONNELLY INC | 40 S ADDISON RD, SUITE 100 | ADDISON | IL | 60101 | (630) 543-9059 | (630) 543-9077 |
| WUNDERLICH-MALEC | 937 NATIONAL AVENUE | ADDISON | IL | 60101 | (630) 827-0200 | (630) 827-0208 |