Hironaka is a well-known Japanese company involved in marine engineering and design. They have been purchasing marine products from JESSN since 2008. Up to June 2018, Hironaka has purchased over 100 JESSN products, including sludge removing vessels, cargo ships, etc. The largest sand-suction equipment sold in Asia is designed by Hironaka and produced by JESSN. Since 2016, 90% of the Japanese marine engineering market has been occupied by JESSN.