Creating and developing new products, or improving existing products, through the application of engineering principles. It involves the use of technical and design skills to create new designs and prototypes, and to test and refine those designs to ensure they meet the requirements and specifications of the intended users. Engineering product design can encompass a wide range of products, including mechanical and electrical devices, medical equipment, consumer products, and industrial machinery. The process typically includes research and development, prototyping, testing and evaluation, and ultimately the manufacture and distribution of the finished products.