Aircraft & Commercial Enterprises, Inc.

Aldon Company, Inc.

Apex Rail Automation

ARMS, Inc.

Control Chief

Dixie Precast, Inc.

Harger Lightning & Grounding

Hatch

J & A Industries

Jaychris Indus-Rail Supply Inc.

L&W Industries, Inc.

PTMW Inc.

Retlif Testing Laboratories

S & C Distribution Company

Schaefer, Inc.

SERRMI Products LLC

Siemens Mobility, Inc.

Times Microwave Systems

Tracsis

Twinco Mfg. Company, Inc.

Universal Rail Systems

Western-Cullen-Hayes, Inc.