SLM Solutions Group AG engages in the metal-based additive manufacturing technology services, which commonly used in three-dimensional printing. It operates through the Machine Sales and After Sales segments. The Machine Sales segment develops, produces, markets, and sells machines for selective laser melting. The After Sales segment comprises of business with machine-related services, sales of replacement parts and accessories, and sales of merchandise. The company was founded by Henner SchÃ¶neborn and Hans-Joachim Ihde on November 9, 2011 and is headquartered in LÃ¼beck, Germany.