Help needed to market a new patent design

We have built, tested and prototyped a version of a delivery cart system that will be used in the beverage industry and other industries and as such, we are aware of just how hard it is to find a manufacturer that has the ability to produce these in quantity, while maintaining the integrity of the design and applications. We knew coming in that ergonomics is tantamount to a better 'mouse trap' and reducing workers comps claims would offset the cost of this design. Another advantage of this design includes reducing the time needed for deliveres; more deliveries can be made in the same time slot and goods can more safely be delivered to the customer's door. We are not manufacturers, our position is developing new products that resolve existing problems. Any help would be appreciated.