In 1957, Katsutoshi Shimizu took over Shimizu Shop, a domestic trading company in Nagasaki. He then started to export second-hand vessels to the Philippines in 1968. Having won public commendation as a contributory firm to exportation from the Ministry of International Trade and Industry (MITI) in 1972, he ventured in importing wood products from Asian countries and established a woodenware factory in Manila and a rattan factory in Cebu, Philippines. By 1979, Shimizu Specialized Fishing Pvt., Ltd, a joint fishery corporation, was established in Bangladesh, and exported two brand new shrimp trawlers.

Mr. Shimizu did not stop venturing in the ship industry only but also in mail-order sales of fine noodles from Nagasaki as well as dried mushrooms and seaweeds. It then moved its headquarters in different areas in Asia in 1985 to accommodate its vast expansion. By this time, he established a joint fishery business under Victory Ventures Fishing Corporation in Manila as well as Alpha International Corporation responsible for the importation of marine parts, navigation equipment, engines, and generators. Thereafter new partnerships were opened in India, Singapore, China, and Korea.

Until this present time, Shimizu & Co., Ltd., continues in its trading business. It sold more than a thousand second-hand vessels all over Asia, caters engine parts and other related equipment, and even sold vessel to a new client in Greece last June 2019