Paul A. Tres is a best-selling author and an international speaker and lecturer on plastic product development and design with 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).

Tres offers a broad perspective of the plastic industry in general and to the plastic marketing, manufacturing, material selection, and part design in special. His expertise extends to manufacturing processes such as in-mold-assembly, co-injection, fusible core injection molding, gas 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.

Tres' 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, Tres is the founder of Engineering Training Services, established in 1992 in Michigan as a full-service consultancy. 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 thirteen countries.