About us

QSI (a.k.a. QS Industries, Inc.) has been in business since 1983. It is a general electronic design company that specializes in model train products, Bio-medical Instrumentation, and Integrated Circuits. QSI has supplied many model train companies with high-quality state-of-the-art sound and train control systems including:
  • Ajin
  • American Hobby Distributors
  • Atlas
  • Austrains
  • Bio-Control
  • Broadway Limited Imports
  • Canadian Hobby Craft
  • House of Duddy
  • Charles Ro
  • Eureka models
  • Intermountain Railroad Company
  • Korea Brass
  • Life-Like
  • Lionel
  • Mikes Train House
  • MKT
  • Red Caboose
  • Scale Tin Rail
  • SGL Lines
  • Sunset Models
  • Tenshodo
  • Third-Rail Trains
  • Tonys Train Exchange
  • Walthers
  • Weaver Models
  • Williams Electric Trains.


  • © 2017, Q S Industries, Inc.