Summit Polymers is a leading Tier 1 Automotive Supplier of Interior Kinetic and Decorative Systems. As a world-class automoti ... ve supplier of injection molded interior trim, we specialize in the engineering, manufacturing, and assembly of feature based registers, consoles and trim panels. Privately held, we have 3000 employees at 10 manufacturing sites, with plants in Michigan, Kentucky, Mexico, and China; plus a Technical Center in Portage, MI and Sales and Engineering office in Dearborn, MI. Our client base includes Ford, GM, Chrysler, Toyota, Nissan, VW, and Fiat. read more