Iwai Metal supplies highly reliable products such as heat sinks and metal stamping, satisfying our customer's requirements Iw ... ai Metal America Co. is wholly owned by Iwai Metal Fabricating (Japan), itself owned by Sumitomo Light Metal, and serves as the nerve center for Iwai’s North American markets. Along with the Japanese tradition for excellence, this structure gives Iwai the resources necessary to tackle any job and ensure the highest quality. read more