about us

Our Mission

Dickman Supply is a company that is totally dedicated to our customers and our community. Our commitment is to provide complete industrial and electrical product solutions by offering value-added services and demonstrating superior technical support. We pledge to fulfill all our customers’ needs promptly, accurately, and courteously. We will educate ourselves to the peak of our profession, so that we may continue to provide product solutions of the highest quality and value.

Our People

As a customer centric company, our passionate, experienced employees are always seeking out new ways to help you achieve your goals. Your success is our success!

Our Product

We take pride in providing our customers with the right products to fit their needs. From lighting to conduit, we have a wide range of products in stock and ready to ship at a great price.

Our History

Since being purchased by the Geise family in 1986, the company has grown exponentially while setting a culture of excellence and reliability with our customers. 


Ruben Dickman founded Dickman Industrial, an industrial mill supply house in Sidney, Ohio.


Dickman Supply began building custom electrical assemblies to meet a growing customer need.


Dickman Supply was purchased by Tim and Marla Geise.


The custom assembly division was expanded to include wire harnesses and custom wire leads.


Relocated Union City, IN store to Greenville, OH.


Completed construction on new Greenville facility.


To meet the growing needs of Dickman's northern customers, the Celina Branch was built. At the same time, the custom division was separated as a subsidiary of Dickman Supply and Electro Controls was born.


Greenville completes 8,000 sq ft warehouse expansion.


Dickman Supply launches the Green Energy Solutions Division (GES) to work with customers in meeting their green energy directives.


Opening of new branch in Marysville, OH to serve Central Ohio market.


Completed construction on new Marysville facility.


Dickman Supply was taken over by Tim and Marla Geise's three sons, Chris, Kevin and Jason.

Contact Us


(937) 492-6166


(937) 548-6103


(419) 584-1170


(937) 738-7500