Business Groups Home Businesses Advanced Materials Group Specialty materials for thin film deposition, microelectronic packaging products and inorganic chemicals. Beryllium & Composites Global producer of beryllium-based metals and metal matrix composites. Electrofusion Focused on beryllium x-ray windows, ultra high vacuum ( UHV ) components and Truextent acoustic solutions. Aerospace Metal Composites Manufacturer of High Performance Metal Matrix Composites and Alloys. Performance Alloys One of the world's leading suppliers of high-performance alloys. Large Area Coatings Specializing in the physical vapor deposition ( PVD ) of inorganic materials onto flexible polymeric films. Precision Optics Largest manufacturers of precision thin film coatings and optical filters. Ceramics Global leader in high-performance engineered ceramics. Technical Materials The world’s leading resource for customized, high-performance specialty strip metal products.