DCI, Inc. - Stainless steel storage and processing tanks for the Food, Dairy, Beverage, Pharmaceutical, Chemical, Cosmetic Industries DCI, Inc. is a world-leading manufacturer of stainless steel storage & processing vessels, agitators & integrated systems for many industries. Learn more! We are proud to be a world leader in the manufacturing and servicing of both shop and field-fabricated storage and processing tanks, vessels, agitators and integrated systems. We serve a variety of important industries across the globe.