| 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 |
| ALLAN INTEGRATED CONTROL | 2021 BEULAH AVE, PO BOX 888 | E TROY | WI | 53120 | (262) 642-7800 | (262) 642-7870 |
| ANCHOR MECHANICAL INC | 255 N CALIFORNIA | CHICAGO | IL | 60612 | (312) 492-6994 | (312) 492-6996 |
| ARCADIS US INC | 2800 W HIGGINS RD, STE 1000 | HOFFMAN ESTATES | IL | 60169 | (847) 805-1000 | (312) 917-1572 |
| 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 |
| BRADLEY CORPORATION | 1005 PENINSULA DR | WEIDMAN | MI | 48893 | (989) 444-9291 | (989) 444-9291 |
| 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 |
| CITY ELECTRIC SUPPLY | 1164 N MCLEAN BLVD | ELGIN | IL | 60123 | (630) 815-4426 | (999) 999-9999 |
| CONSTRUCT CONNECT | 30 TECHNOLOGY PKWY S, STE 100 | NORCROSS | GA | 30092 | (800) 364-2059 | (866) 570-8187 |
| 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 |
| DRYDON EQUIPMENT INC | 2445 WESTFIELD DR, STE 100 | ELGIN | IL | 60124-7840 | (224) 629-4060 | (224) 629-4061 |
| EMERSON PROCESS MANAGEMENT POWER | 2507 LOVI RD | FREEDOM | PA | 15042 | (708) 263-6104 | (412) 963-4245 |
| FH PASCHEN | 5515 N EAST RIVER RD | CHICAGO | IL | 60656 | (312) 590-8121 | (773) 693-0064 |
| FLOTTWEG SEPARATION TECHNOLOGY INC | 10700 TOEBBEN DR | INDEPENDENCE | KY | 41051 | (859) 448-2300 | (859) 448-2333 |
| GASVODA & ASSOCIATES INC | 1530 HUNTINGTON DR | CALUMET CITY | IL | 60409 | (708) 891-4400 | (312) 894-1138 |
| GRAYBAR ELECTRIC CO | ONE PIERCE PL, STE 800 | ITASCA | IL | 60143 | (630) 461-6914 | (630) 671-6000 |
| HELM ELECTRICAL SERVICES INC | 5303 9TH AVE | COUNTRYSIDE | IL | 60525 | (708) 579-1000 | (999) 999-9999 |
| HILTI INC | 5400 S 122ND EAST AVE | TULSA | OK | 74146 | (800) 950-6119 | (800) 879-7000 |
| 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 |
| INDIANA STEEL CARRIERS INC. | 2558 KERRY DR | VALPARAISO | IN | 46385 | (219) 712-5792 | (000) 000-0000 |
| INTEGRATED DEMOLITION SERVICE LLC | 636 W RICHTON RD | CRETE | IL | 60417 | (708) 369-7508 | (999) 999-9999 |
| INTEGRATED POWER SYSTEM LLC | 1949 NE 148TH ST | NORTH MIAMI | FL | 33181 | (786) 567-1143 | (999) 999-9999 |
| JACOBS ENGINEERING GROUP INC | 525 WEST MONROE ST, STE 1600 | CHICAGO | IL | 60661 | (312) 251-3000 | (999) 999-9999 |
| 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 |
| 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 |
| KENDALL LLC | 5100 BULWER AVE | ST. LOUIS | MO | 63147 | (314) 546-8831 | (314) 621-1934 |
| 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 |
| LEYDEN ELECTRIC INC | 604 E NORTH ST | ELBURN | IL | 60119 | (630) 365-0200 | (630) 365-0202 |
| MAMAN CORP | 1055 ARTHUR AVE | ELK GROVE VILLAGE | IL | 60007 | (224) 899-3062 | (847) 258-4675 |
| NIPPON SANSO MATHESON, INC | 909 LAKE CAROLYN PKWY, STE 1100 | IRVING | TX | 75039 | (815) 228-7855 | (999) 999-9999 |
| NOVASPECT INC | 1124 TOWER RD | SCHAUMBURG | IL | 60173 | (708) 362-0285 | (847) 885-8200 |
| OKEH ELECTRIC COMPANY | 825 UNIVERSITY DR | ARLINGTON HEIGHTS | IL | 60004 | (847) 577-7744 | (847) 577-7764 |
| 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 |
| PUMPING SOLUTIONS INC | 2850 W 139TH ST | BLUE ISLAND | IL | 60406 | (708) 272-1850 | (708) 272-1825 |
| 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 |
| REYES GROUP LTD | 15515 S CRAWFORD AVE | MARKHAM | IL | 60428 | (708) 596-7100 | (708) 596-7184 |
| SENTRIMAX CENTRIFUGES INC | 9440-60 AVE | EDMONTON | AB | T6E 0C1 | (780) 434-1781 | (780) 434-1620 |
| SMARTPROCURE INC | 700 W HILLSBORO BLVD, STE 4-100 | DEERFIELD BEACH | FL | 33441 | (888) 998-8675 | (954) 399-7067 |
| USA-FORM INC | 3N775 POWIS RD | WEST CHICAGO | IL | 60185 | (630) 513-6046 | (999) 999-9999 |
| VISION MACHINE INC | 25045 SPRING RIDGE DR | SPRING | TX | 77386 | (832) 562-2112 | (832) 562-2115 |
| WILLIAM T CONNELLY INC dba | 476 BRIGHTON DR | BLOOMINGDALE | IL | 60108 | (630) 543-9059 | (630) 543-9077 |