Manufacture electronic RF controllers

We are a startup US company selling a custom product with an electric motor. We created an add-on device that receives CEC info from a TV and controls the motor with RF signals. We have all designs and firmware for our RF device completed, prototyped, and tested. The only part of the design we do not have yet is a 3D print file for the outer plastic housing. We are looking for an electronics manufacturer to produce our RF device for us. Small batches at first, but hopefully larger amounts as we increase sales of our product.