Complex sentence: Proposals to meet the OH-X requirement were submitted by Kawasaki, Fuji and Mitsubishi, with the Kawasaki design selected as the winner (with Fuji and Mitsubishi serving as subcontractors) on 18 September 1992.
Split into simpler sentences: Proposals to meet the OH-X requirement were submitted by Kawasaki, Fuji and Mitsubishi. The Kawasaki design selected as the winner (with Fuji and Mitsubishi serving as subcontractors) on 18 September 1992.