| 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 |
| BIDNET | 20A RAILROAD AVE | ALBANY | NY | 12205 | (800) 677-1997 | (518) 438-0599 |
| BOTRAN TECHNOLOGY LLC | 426 W ROSLYN PL | CHICAGO | IL | 60614 | (312) 952-5812 | (999) 999-9999 |
| BROADWAY ELECTRIC INC | 500 W ALGONQUIN RD | MT. PROSPECT | IL | 60056 | (847) 593-0001 | (847) 593-0010 |
| CHICAGOLAND | PO BOX 3533 | PEORIA | IL | 61612 | (309) 401-6167 | (309) 401-6168 |
| 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 |
| DEPUE MECHANICAL INC | 113 S RIDGE RD | MINOOKA | IL | 60447 | (815) 255-2500 | (815) 255-2501 |
| DHI WATER & ENVIRONMENT INC | 141 UNION BLVD, STE 320 | LAKEWOOD | CO | 80228 | (303) 937-4488 | (999) 999-9999 |
| DRYDON EQUIPMENT INC | 2445 WESTFIELD DR, STE 100 | ELGIN | IL | 60124-7840 | (224) 629-4060 | (224) 629-4061 |
| ERA VALDIVIA CONTRACTORS INC | 11909 S AVE O | CHICAGO | IL | 60617 | (773) 721-9350 | (773) 721-8027 |
| 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 | (999) 999-9999 |
| HILTI | 2828 N CAMBRIDGE AVE, #103 | CHICAGO | IL | 60657 | (312) 972-1104 | (918) 260-4637 |
| HOLOPHANE | 1300 S WOLF RD | DES PLAINES | IL | 60018 | (815) 345-6877 | (815) 345-6877 |
| 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 |
| 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 |
| KALETECH LLC | 3831 MCCOY DR, #109 | AURORA | IL | 60504 | (630) 853-2533 | (630) 604-2344 |
| KELSO-BURNETT CO | 5200 NEWPORT DR | ROLLING MEADOWS | IL | 60008 | (847) 259-0720 | (847) 483-3887 |
| KIEWIT INFRASTRUCTURE CO | TWO PIERCE PL, STE 1600 | ITASCA | IL | 60143 | (773) 458-1250 | (999) 999-9999 |
| LAI, LLC dba LAI, LTD | 5400 NEWPORT DR, STE 10 | ROLLING MEADOWS | IL | 60008 | (847) 392-0990 | (847) 392-1095 |
| LINDAHL BROTHERS INC | 622 E GREEN ST | BENSENVILLE | IL | 60106-2579 | (630) 595-1080 | (630) 595-0976 |
| M J ELECTRIC | 108 INDUSTRIAL DR | MINOOKA | IL | 60447 | (906) 239-6130 | (906) 779-4217 |
| PACIFIC WASTEWATER OPTIMIZATION | 43575 MISSION BLVD, PMP 1031 | FREMONT | CA | 94539 | (510) 435-8270 | (510) 435-8270 |
| 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 |
| PWXPRESS | 1900 COFFEEPORT RD | JACKSONVILLE | FL | 32208 | (408) 676-8941 | (408) 676-8942 |
| QUANTUM CROSSINGS LLC | 111 E WACKER DR, STE 990 | CHICAGO | IL | 60601-4304 | (312) 467-0065 | (312) 467-0340 |
| R.W. COLLINS CO | 7225 W 66TH ST | CHICAGO | IL | 60638 | (708) 325-5017 | (708) 458-6870 |
| SHERIDAN PLUMBING & SEWER INC | 6754 W 74TH ST | BEDFORD PARK | IL | 60638 | (708) 475-7100 | (708) 475-7138 |
| SMARTPROCURE INC | 700 W HILLSBORO BLVD, STE 4-100 | DEERFIELD BEACH | FL | 33441 | (888) 998-8675 | (954) 399-7067 |
| WATSON-MARLOW FLUID TECHNOLOGY | 37 UPTON DR, UPTON TECH PARK | WILMINGTON | MA | 01887 | (800) 282-8823 | (978) 658-0041 |
| WUNDERLICH-MALEC | 937 NATIONAL AVENUE | ADDISON | IL | 60101 | (630) 827-0200 | (630) 827-0208 |