Job description. Molded Fiber Glass Union City is celebrating 65 proud years in Union City, PA. With 50 highly specialized teammates, we have successfully completed over 50,000 projects and counting. MFG Union City has the resources to produce, assemble and paint sizeable Fiberglass Reinforced Plastic (FRP) structures. We are currently looking to fill about 30 positions due to our continual expansion within the Fiberglass industry. To find out mo...