NORTHERN DIGITAL, INC.

Northern Digital Inc. (NDI) is a consulting engineering company who specializes in Control
Systems design and integration. Established in 1988, NDI has been in business for over 32 years.
We believe in the importance of client relationships and detailed planning throughout the many
stages of our projects. Our unwavering commitment to providing the highest-quality solutions in
our industry helps us in achieving our vision of being the most well-known, highest-regarded, and
most sought-after provider of technical solutions and controls systems engineering.