From the website:
Midland Plastics, Inc. is a privately held distributor of plastic stock shapes and a plastic custom component manufacturer celebrating over 60 years in business. We serve a wide cross-section of industrial and marine markets.
We are one of the oldest, and largest, plastic suppliers in the Midwest. Founded in 1945 as a distributor of stock plastic shapes, we have expanded into custom manufacturing and fabrication. In the 1960’s, we added vacuum forming to our production capabilities and have expanded that division to include pressure-forming.
In addition to our headquarters in New Berlin, WI, a Milwaukee suburb, we also have branch locations in Green Bay, Madison and Wausau, WI.; Rockford, IL.; Davenport (Quad Cities), and Des Moines, IA.