Paul A. Tres


Consultant, Lecturer, Author, Expert Witness

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Paul A. Tres is a best selling author and an international speaker and lecturer on plastic product development and design having over 40 years of experience in design, marketing, selling and manufacture of plastic components and systems while serving the plastics and automotive industries.

For his contribution to the spread of knowledge about plastic product design and development he was elected (1998) Fellow of the Society of Plastics Engineers (SPE).

Mr. Tres offers a broad perspective of the plastic industry in general and to the plastic marketing, manufacturing, material selection, and part design in special.

Mr. Tres' expertise extends to manufacturing processes such as in-mold-assembly, co-injection, fusible core injection molding, gas and water assist injection molding, material selection, multi-shot injection molding and project management with national and international teams of professionals in Brazil, Canada, China, France, Germany, India, Italy, Malaysia, Mexico, South Korea, Thailand, United Kingdom, and United States.

His experience includes innovation strategies, competitive analysis, design trend mapping, new business concepts and the creation of user experiences through integrative interaction of marketing and design.

A practicing consultant, author and lecturer, Paul is the founder of Engineering Training Services, established in 1992 in Michigan as a full service consultancy.

In parallel with his professional activity, he participated as a lecturer - to educate design, engineering and marketing professionals about plastics - with Grand Valley State University in Grand Rapids, MI (1996-2001, 2017-2018), Michigan State University in Troy, MI (2016-2022), Purdue University in Fort Wayne, IN (2001-2002), Robert Morris University in Waukegan, IL (2010-2011), University of Michigan in Dearborn, MI (2002-2016), University of North Carolina in Charlotte, NC (1998-2001), University of Wisconsin - Madison, WI (1992-1996), and University of Wisconsin - Milwaukee, WI (1998-2002).

Author of Designing Plastics Parts for Assembly textbook published by Carl Hanser Verlag, currently at its 10th English edition and at the 8th Chinese edition, Paul A. Tres is a frequent international lecturer, speaking on plastic product design and development, marketing strategies, product positioning and introduction, design philosophy and robust design to audiences in twelve countries.



  • Member of the Fellow Nomination Committee of Society of Plastics Engineers, 1999-2019
  • Councilor Corporate member - French-American Chamber of Commerce, 2003-2004
  • Elected Board Member, Detroit Section of SPE, 2002-2005
  • Elected Board Member, Product Design and Development Division of SPE, 1994-2003
  • Chairman, Product Design and Development Division of SPE (PD3), 1998-1999

Papers, Articles, Interviews, Lectures & Webinars

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