YKK 's vertically integrated production system turns out consistently high quality products around the world. This global quality is maintained by the vertical integration of production, which involves the in-house provision of every product-related raw material, machinery, and technology.

YKK 's production systems for fastening products and architectural products use technologies developed over many years. To meet changing market needs, YKK makes tremendous efforts to develop high-value-added products and conduct research into new materials and technologies.