GrainPro | 8,546 followers on LinkedIn. GrainPro is dedicated to giving you the best postharvest system through storage, drying, and transport solutions. | GrainPro is dedicated to giving you the best postharvest system through storage, drying, and transport solutions. Using Ultra Hermetic™ technology, we promote healthy and chemical-free ways in handling agricultural commodities such as coffee, maize, rice, seeds, and cocoa. Founded in Concord, Massachusetts, USA in 1992, we are now a leading global company serving in more than one hundred countries found all over the world.