It is a medium-sized fishery industry that directly catches tuna, and exports it to Japan and other countries in frozen state. It started deepwater fishery while operating wholesale/retail for fisheries in the early stage of business. Currently, the company is growing steadily by expanding domestic distribution network of marine products through wholesale/retail of tuna for sashimi, producing and selling popcorn and laver grill, and sales of high quality fish.

Since its establishment in 1971, Sajo Industries, a leading company in the deepwater fishing industry such as tuna longline fishing/purse seine, pollock trawl, and squid fishing, has grown to become a slaughtering, meat processing, food manufacturing and retail business. In addition to marine resources development, the company is also taking the lead in creating a rich food culture.