As an innovative supplier of heat sinks, custom-fabricated aluminum extrusions and machined prototypes, M&M Metals has served countless electronics manufacturers since 1974. Later, it developed into a global supplier of advanced engineering support for thermal application designs, short run orders, and timely deliveries of stocked common heatsink profile configurations for high volume production requirements. M&M Metals is now Alexandria Extrusion South, a division of Alexandria Industries.