TDI: 309.263.6000

DSI: 309.263.7706

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Many manufacturing and industrial companies are headquartered or have locations in Joliet, IL. TDI provides ample support for manufacturers, including research and development, data acquisition and control solutions, machining, process upgrades, and more.


What TDI Does


Testing Services

We are the Test Development Innovators because we are the best in the business when it comes to research and development, test design, testing services, and more.


  • EOL and Quality Control. Quality control is important to us because we understand how important it may be to your end consumer. As a company that complies with multiple industry standards and all OSHA regulations, we understand the important of compliance and safety ratings. Our end of line testing, pneumatic leak testing, and quality control initiatives are guaranteed to ensure maximum product quality from prototype to assembly to fabrication.


  • High Pressure Hydraulics. TDI is one of few area companies with the knowledge and specialized equipment required to perform high pressure and ultra-high pressure hydraulics testing. Our fuel injection testing and fuel system performance evaluations can ensure your hydraulics system is without any potentially-hazardous fallacies.



TDI/DSI houses the most up-to-date machining equipment, including water-jet cutters, turning centers, and vertical machining centers. As such, we are fully equipped to take on any project for your production needs. We can customize parts, tools, and fixtures to your specification.



Staying current with machinery, processes, and control infrastructures is absolutely imperative in the production and manufacturing fields. TDI understands this. We will compile the data and track available upgrades on your behalf, so you can stay busy with output. We can upgrade your systems and equipment to ensure optimal productivity and compliance with standards.


Production and Manufacturing

For over 25 years, TDI has been honing expertise in manufacturing and production. Our engineering specialists have the skills to design, manufacture, and consult for all of your company’s growing needs.


Joliet, IL works with TDI.

To learn more about what TDI can do for your business, contact us at 309-263-6000.