MBR Stones Inc

PriTel designs, manufactures and markets fiber lasers, amplifiers and related equipment for 1550-nm band applications. Specializing in RF and optical technologies, scientists at PriTel design and build state-of-the-art actively and passively mode-locked fiber optic lasers that meet the most demanding technical specifications. The company works closely with telecommunications clients worldwide to custom-design short-pulse fiber optic lasers that operate at repetition rates up to 40 Gbps. PriTel's multiplexing systems enable ultra-high data rates exceeding 320 Gbps. PriTel s sub-picosecond-pulse amplifiers and pulse compressors address the increasing demand for short pulses in optical coherence tomography and supercontinuum generation. The company is located in Naperville, Ill.

The Lyon and Dittrich Holding Company serves as a holding company for nine autonomous manufacturing and service companies. The holding company provides treasury, human resources, risk management, and general strategic planning for all of the subsidiaries. The L & D companies are Durand Metal Products, Lyon Metal Products, Paltier, Paris Metal Products, Pride Metal Products, Riverpoint, Sycamore Systems, and Targeted Marketing. The holding company has its headquarters Aurora, Illinois.