| Company Name | Address | City | State | Zip Code | Phone Number | Fax Number |
| AA SERVICE COMPANY | 550 ANTHONY DR | NORTHBROOK | IL | 60062 | (847) 729-7889 | (847) 994-4507 |
| AFFILIATED STEAM EQUIPMENT CO | 12424 S LOMBARD LN | ALSIP | IL | 60803 | (708) 371-0600 | (708) 371-0670 |
| AGGREKO LLC | 4610 W ADMIRAL DOYLE DR | NEW IBERIA | LA | 70560 | (631) 316-1731 | (800) 853-6066 |
| AJ MATERIALS | 17 N WABASH | CHICAGO | IL | 60602 | (312) 509-2607 | (312) 509-2607 |
| AMALGAMATED SERVICES INC | 21024 S 80TH AVE | FRANKFORT | IL | 60423 | (708) 417-5946 | (815) 464-5196 |
| AMS INDUSTRIES INC | 2646 HIGHWAY AVE | HIGHLAND | IN | 46322 | (219) 695-1046 | (219) 225-0030 |
| ANCHOR MECHANICAL INC | 255 N CALIFORNIA | CHICAGO | IL | 60612 | (312) 492-6994 | (312) 492-6996 |
| ANGSTROM LLC | 4455 S KING DR, SUITE 101B | CHICAGO | IL | 60653 | (913) 972-6779 | (913) 972-6779 |
| ATLAS TECHNICAL CONSULTANTS | 1815 S MEYERS RD, SUITE 1050 | OAKBROOK TERRACE | IL | 60181 | (630) 613-3916 | (630) 613-1227 |
| AUTUMN CONSTRUCTION SERVICES INC | 87 EISENHOWER LANE SOUTH | LOMBARD | IL | 60148 | (630) 588-9585 | (630) 588-9586 |
| BIDNET | 20A RAILROAD AVE | ALBANY | NY | 12205 | (800) 677-1997 | (518) 438-0599 |
| BROADWAY ELECTRIC INC | 500 W ALGONQUIN RD | MT. PROSPECT | IL | 60056 | (847) 593-0001 | (847) 593-0010 |
| BUILDERS AVENUE | 1452 E 52ND ST | CHICAGO | IL | 60615 | (708) 232-3919 | (708) 232-3919 |
| CARRIER CORP | 7501 S QUINCY ST, STE 110 | WILLOWBROOK | IL | 60527 | (630) 516-3278 | (999) 999-9999 |
| CARY CO, THE | 1195 W FULLERTON AVE | ADDISON | IL | 60101 | (630) 376-2400 | (630) 629-3690 |
| CHICAGOLAND | PO BOX 3533 | PEORIA | IL | 61612 | (309) 401-6167 | (309) 401-6168 |
| CONSTRUCT CONNECT | 30 TECHNOLOGY PKWY S, STE 100 | NORCROSS | GA | 30092 | (800) 364-2059 | (866) 570-8187 |
| CONSTRUCTION INC | 2 E 22ND ST, STE 300B | LOMBARD | IL | 60148 | (312) 502-8931 | |
| CRAFT MECHANICAL LLC | 4639 W ARMITAGE AVE | CHICAGO | IL | 60639 | (630) 863-3371 | (999) 999-9999 |
| DATABID | 433 PENN ST | NEWTOWN | PA | 18940 | (888) 929-3282 | (888) 929-9293 |
| 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 |
| F E MORAN INC MECHANICAL SERVICES | 2283 CARLSON DR | NORTHBROOK | IL | 60062 | (847) 291-9101 | (847) 291-9115 |
| FRANCO HAULING LLC | 460 W IRVING PARK RD, SUITE C358 | BENSENVILLE | IL | 60106 | (630) 776-4092 | (999) 999-9999 |
| GARLAND/DBS INC | 3800 E 91ST ST | CLEVELAND | OH | 44105 | (216) 430-3513 | (216) 883-2055 |
| GRANITE CONSTRUCTION CO | 1011 E TOUHY AVE, STE 500 | DES PLAINES | IL | 60018 | (847) 919-8200 | (866) 736-9487 |
| GRAYBAR ELECTRIC CO | ONE PIERCE PL, STE 800 | ITASCA | IL | 60143 | (630) 461-6914 | (630) 671-6000 |
| GREAT LAKES METALS CORP | 8920 S OCTAVIA | BRIDGEVIEW | IL | 60455 | (708)430-0500 | |
| GUNN & PEGELOW INC | 1920 INDUSTRIAL DR | LIBERTYVILLE | IL | 60048 | (847) 573-7030 | (999) 999-9999 |
| IHC CONSTRUCTION CO LLC | 385 AIRPORT RD, STE 100 | ELGIN | IL | 60123 | (847) 742-1516 | (847) 742-6610 |
| INDEPENDENT MECHANICAL INDUSTRIES | 2671 UNITED LN | ELK GROVE VILLAGE | IL | 60007 | (773) 243-0575 | (773) 496-8136 |
| INTEGRATED DEMOLITION SERVICE LLC | 636 W RICHTON RD | CRETE | IL | 60417 | (708) 369-7508 | (999) 999-9999 |
| 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 |
| MEILNER MECHANICAL SALES, D/B/A | 19 W COLLEGE DR | ARLINGTON HEIGHTS | IL | 60004 | (847) 253-1040 | (847) 253-1332 |
| MIRAMAR MECHANICAL GROUP | 9300 OGDEN AVE | BROOKFIELD | IL | 60513 | (312) 455-0200 | (708) 221-0510 |
| NALCO CO | 1601 W DIEHL RD | NAPERVILLE | IL | 60563 | (800) 288-0879 | (630) 305-2918 |
| NATIONAL WRECKING CO | 2441 N LEAVITT | CHICAGO | IL | 60647-0005 | (773) 384-2800 | (773) 384-0403 |
| NORTH AMERICA PROCUREMENT COUNCIL | P O BOX 40445 | GRAND JUNCTION | CO | 81504 | (302) 450-1923 | (302) 450-1925 |
| OGNI INC | 140 E COMMERICAL ST, STE 1 | WOODDALE | IL | 60191 | (708) 236-9411 | (708) 236-9412 |
| PATH CONSTRUCTION COMPANY INC | 125 E ALGONQUIN RD | ARLINGTON HEIGHTS | IL | 60005 | (847) 398-7100 | (847) 398-7101 |
| SCHNEIDER ELECTRIC INC | 200 N MARTINGALE RD STE 1000 | SCHAUMBURG | IL | 60173 | (708) 212-0804 | (847) 881-0741 |
| SIEMENS INDUSTRY INC | 1701 GOLF ROAD, STE 3-500 | ROLLING MEADOWS | IL | 60008 | (847) 803-2700 | (847) 803-2733 |
| SIEMENS INDUSTRY INC | 585 SLAWIN CT | MT PROSPECT | IL | 60056 | (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 |
| T & N CHICAGO INC | 329 W 18TH ST, SUITE 411 | CHICAGO | IL | 60616 | (312) 641-5850 | (312) 641-5851 |
| THE ABERDEEN GROUP INC | 234 N FAIRFIELD AVE | CHICAGO | IL | 60612-2051 | (773) 524-2575 | (773) 524-2580 |
| THE STONE GROUP INC | 900 S CAMPBELL AVE | CHICAGO | IL | 60612 | (773) 638-2758 | (312) 492-6996 |
| THERMOSYSTEMS INC | 960 INDUSTRIAL DR, UNIT 1 | ELMHURST | IL | 60126 | (630) 693-0920 | (630) 693-0921 |
| THWILSON BONDS | 4586 E COPPER AVE, SUITE 3342 | CLOVIS | CA | 93619 | (559) 762-1012 | (559) 762-1012 |
| W. E. ONEIL CONSTRUCTION CO | 1245 W WASHINGTON BLVD | CHICAGO | IL | 60607 | (773) 755-1611 | (773) 584-0866 |
| WINDY CITY REPRESENTATIVES LLC | 200 WINDSOR DRIVE | OAK BROOK | IL | 60523 | (630) 590-6933 | (630) 571-4110 |