Procurement teams are expected to reduce purchasing costs, while business leaders focus on improving margins. As a result, selecting the lowest quotation often appears to be the logical decision. However, successful product development is rarely determined by unit price alone. The true cost of a project includes engineering changes, quality issues, communication efficiency, delivery performance, manufacturing stability, and long-term supply capability.

As the electric vehicle industry continues to evolve, more companies are looking to differentiate their products through customized components such as motor controllers, chargers, displays, wiring harnesses, sensors, and electronic modules. However, many customization projects fail not because of engineering limitations, but because the project requirements were never clearly defined at the beginning.

Material selection is one of the earliest and most critical decisions in product development. Yet it is often reduced to comparing datasheets, checking flame ratings, IP protection levels, operating temperatures, thickness, or price. While these specifications are important, they rarely tell the complete story. The long-term reliability of a product depends not only on the material's published performance, but also on how well that material matches the real operating enviro