GSI
Greenslade Sales Inc.

GSI Greenslade Sales Inc. GSI Greenslade Sales Inc. GSI Greenslade Sales Inc.
  • Home
  • About us
  • Manufacturers
  • Contact US
  • Blog
  • More
    • Home
    • About us
    • Manufacturers
    • Contact US
    • Blog

GSI
Greenslade Sales Inc.

GSI Greenslade Sales Inc. GSI Greenslade Sales Inc. GSI Greenslade Sales Inc.
  • Home
  • About us
  • Manufacturers
  • Contact US
  • Blog

About GSI - Your Electronics Manufacturers Representative

Our History

GSI Greenslade Sales, Inc. is a premier Electronics Manufacturers Representative firm serving Illinois and Wisconsin. With a legacy that began in the early 1950s and official incorporation in 1964, we have established a solid reputation for cultivating long-term, mutually beneficial partnerships between suppliers and customers.


As dedicated Electronics Sales Representatives, our team provides best-in-class service and support, facilitating seamless collaboration among design engineers, purchasing teams, and our principals. Acting as an extension of the manufacturers we represent, we are focused on driving growth, maximizing profitability, and achieving exceptional results across various industries, including Industrial, Medical, Military/Aerospace, Automotive, Telecommunications/Wireless, Lighting, EV/Green Energy, and Contract Assembly.


At GSI, we take pride in our professionalism, technical expertise, and our capability to deliver comprehensive coverage for our principals. This strategic approach to sales and customer support has earned us recognition as a trusted partner within the electronics manufacturing sector.

Black and white abstract logo with stylized symmetrical shapes and text.

Proud ERA Member

For manufacturers, having their rep firm, such as GSI Greenslade Sales Inc., be a part of the Electronics Representative Association (ERA) is beneficial because it ensures that the rep firm is connected to a network of electronics sales representatives. This membership keeps them updated on the latest trends and ensures adherence to high industry standards. As a result, rep firms enhance their credibility and professionalism, making them more attractive to manufacturers looking for reliable, well-connected representatives in Illinois. Furthermore, it signifies that the rep firm is supported by an organization advocating for the interests of the industry, which offers stronger, more informed, and effective representation of the manufacturer’s products in the marketplace.


Copyright © 2026 GSI - All Rights Reserved.

  • Contact US
  • Blog

Powered by

This website uses cookies.

We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.

DeclineAccept