Product development services from idea to manufacturing. Defour Oy is a specialist in design and engineering services taking into account manufacturability in all product development steps. Together with strategic partners, Defour Oy offers a full range of services from industrial, electronics and software design, simulations and product verification to manufacturing and deliverable products or proven recipe for manufacturing. We promise to ensure Customer’s successful product launch • Manufacturability throughout the whole product development process • Everything from the same source • Quick Time To Market (TTM)