M Cubed Technologies Inc - Manufactures high-precision ceramic and metal-matrix composite components used in LCD manufacturing & semiconductor equipment.
https://ii-vi.com/ceramics-and-metal-matrix-composites-products/
Matrix Metals LLC - Provides foundry solutions in steel castings, machining and many other value added services.
http://matrixmetalsglobal.com/
MC-21 Inc - Producing metal matrix composite mmc alsic al-sic aluminum silicon carbide for high stiffness light weight low cte markets.
http://www.mc21inc.com/