 MAYVILLE, Wis.--BUSINESS WIRE--Mayville Engineering Company NYSE: MEC the Company or MEC, a leading U.S.-based value added manufacturing partner that provides a broad range of prototyping and tooling, production fabrication, coating, assembly and aftermarket services, today announced that PACCAR, a global technology leader in the design, manufacture and customer support of high-quality light-, medium-, and heavy-duty trucks under the DAF, Kenworth and Peterbilt brands, has recognized 