Mitsui & Co., Ltd. operates as a general trading company worldwide.

The company engages in the manufacture, export, and import of iron and steel products; automotive components; operation of steel processing service centers; trading of automotive, electrical, special, and stainless steel; manufacture, repair, and fabrication of wind turbine towers and flanges; gas distribution businesses; and coal mining, power generation, ferrous alloy, infrastructure maintenance, and water pumping activities.

It also explores, develops, and produces oil, natural gas, and LNG; trades in petroleum products, crude oil, coal, uranium, and LNG; offers FPSO/FSO, fright car, truck, and locomotive leasing services; sells electric power facilities; and develops railway and transportation infrastructures.

The company engages in logistics businesses; wholesale, retail, rental, and finance of construction and mining equipment; multimodal transportation, warehousing, and rolling stock leasing; sale, purchase, and leasing of aircraft and aero engines; leasing and financing activities; and development, process, and marketing of underground resources, and recycling of surface resources.

It also provides electric-arc-furnace, construction materials processing, construction flat-rolled steel, shapes, bars, wire rods, and steel structure materials; methanol, ammonia, chlor-alkali, industrial, gas, and basic chemicals; salt; performance, advanced, specialty, and living, and environmental materials; agrochemicals and fertilizers, and animal and human nutrition products; refined sugar, oils and fats, proteins, grains, and food and beverage products; contract food services; and healthcare products.

The company offers mobile communications; commodity derivative trading; venture investment and asset management services; real estate development, management, leasing, and brokerage services; and ship charter operation services.

Mitsui & Co., Ltd. was incorporated in 1947 and is headquartered in Tokyo, Japan.