Showa Denko Materials Powdered Metals (USA), Inc. has been supplying the highest quality, technologically advanced powdered metal products in North America since 1989. Our customers know they can rely on us to deliver the most innovative designs while maintaining stringent tolerance requirements. Showa Denko Materials Powdered Metals (USA), Inc., while a dominant Valve Guide supplier in North America, also manufactures Structural parts (timing pulleys, sprockets/VCT, and sensor plates) primarily for the automotive industry. The remainder of our product line supports motorcycle and lawn & garden applications.