OREANDA-NEWS. March 14, 2012. Sojitz Marine & Engineering Corporation, a wholly-owned shipping subsidiary of the Sojitz Corporation, will invest approximately USD 1.8 million in Ecochlor, Inc., a US-based maker of ballast water treatment systems. Sojitz Marine & Engineering will also acquire Asian dealership rights for Japan as well as China, South Korea, and Taiwan and will build and reinforce sales structures throughout Asia, a region where demand for such systems is increasing.