Major Subsidiaries and Associated Companies


A-C

Company NameDetails of BusinessSupervision Business Units
AlphaBoat, LLCContent production, creator management and brand sales activities in digital mediaMedia & Digital
Asama Giken Co., LtdMolding and manufacturing of cast parts for automobilesTransportation & Construction Systems
Asmik Ace, Inc.Production and distribution of movies, videos, and game softwareMedia & Digital
Belle Maison Logisco Co., Ltd.Planning, operation and management of distribution centers for mail-order companiesInfrastructure
Bluewell Insurance Brokers Ltd.Reinsurance indermediary, risk consultingInfrastructure
BWA JapanRegional BWA-based telecommunications servicesMedia & Digital
Channel Ginga Co.,Ltd.Supplier of general entertainment programmingMedia & Digital
Chiba Kyodo Silo Co., Ltd.Grain storage (Loading, unloading, storage and transportation of wheat, corn, oilseeds and others)Living Related & Real Estate
Chubu Coal Center. Ltd.Storage of coals and the related businessMineral Resources, Energy, Chemical & Electronics

D-F

Company NameDetails of BusinessSupervision Business Units
DeSC Healthcare, Inc.Miscellaneous healthcare businesses centered on “kencom,” a health recommendation appMedia & Digital
Discovery Japan Inc.Operation of documentary programming "Discovery Channel" and animal programming "animal planet"Media & Digital
Ecobunker Shipping Co.,Ltd.Domestic Shipping IndustryMineral Resources, Energy, Chemical & Electronics
Eiko Service Co., Ltd.Facility management of buildings (Cleaning, equipment maintenance and security)Living Related & Real Estate
Enessance Holdings Co., Ltd.Planning the strategy of LPG & home solution business, controlling its subsidiaries, and LPG wholesaleMineral Resources, Energy, Chemical & Electronics
e-SHARE Ishigaki Co.,LtdSharing business of electric scooterTransportation & Construction Systems
EWEL, Inc.Corporate benefits administration outsourcingMedia & Digital
Feiler Japan Co., Ltd.Import, designing and sales of the German luxury line of Chenille fabrics brand “FEILER” as exclusive importer.Living Related & Real Estate
4R Energy CorporationRecycling of lithium-ion batteries (collection, production, distribution)Transportation & Construction Systems

G-I

Company NameDetails of BusinessSupervision Business Units
Grape One Co., Ltd.Wireless service platform operator for Local 5G and Regional BWA (Broadband Wireless Access)Media & Digital
Gyxis CorporationManufacture, storage, transport, sale and import/export of LP gasMineral Resources, Energy, Chemical & Electronics
Hokkaido District Heating Co., Ltd.District heating and cooling in SapporoInfrastructure
Hokkaido Shearing Kaisha, Ltd.Fabrication and sale of steel productsMetal Products
IG Kogyo Co., Ltd.Manufacture and sales of metal siding products and othersLiving Related & Real Estate
Insight Edge, inc.Specialty company with advanced technologies to accelerate digital transformation (DX)Media & Digital

J-L

Company NameDetails of BusinessSupervision Business Units
Japan Charge Network Co., Ltd.PHEV and EV charging infrastructureTransportation & Construction Systems
J SPORTS CorporationSupplier of sports programmingMedia & Digital
Jupiter Entertainment Co., Ltd.Operation of movie programming "Movie Plus" and women's entertainment programming "LaLa TV"Media & Digital
Jupiter Golf Network Co., Ltd.Supplier of golf programmingMedia & Digital
Jupiter Shop Channel Co., Ltd.Operation of live TV shopping channelMedia & Digital
Jupiter Telecommunications Co., Ltd.
  • CATV operation and telecommunication business throughmanagement of CATV operators.
  • Program supplying business for CATV operators and digital satellite broadcast.
Media & Digital
Jupiter Visual Communications Co.,LtdBroadcasting of special programs on hobbies and lifestyles (Broadcasting of “Act On TV” on hobbies and lifestyles for adults)Media & Digital
KI Fresh Access, Inc.Large area middle trader business of fresh vegetables and fruits and service center businessLiving Related & Real Estate
KINTO CorporationLeasing of motor vehicles、Auto repair/Inspection、Fleet management、Used car sales、Businesses assosiated with Mobility as a serviseTransportation & Construction Systems
KIRIU CorporationAutomotive components manufacturer (Disc rotor, Brake drum, etc.)Transportation & Construction Systems
KIRIU OITA K.K.Automotive components manufacturer (Disc rotor, Brake drum, etc.)Transportation & Construction Systems
KIRIU TECHNOManufacture and sale of various kinds of machines and equipment for automotive componentsTransportation & Construction Systems
KIRIU YAMAGATA CORPORATIONAutomotive components manufacturer (Disc rotor, Brake drum, etc.)Transportation & Construction Systems
KS Summit Steel Co., Ltd.Shearing, slitting, and sale of steel sheetsMetal Products
LNG Japan CorporationTrading of LNG, investment and financing related to LNG businessMineral Resources, Energy, Chemical & Electronics

M-O

Company NameDetails of BusinessSupervision Business Units
Mammy Mart CorporationSupermarket chainLiving Related & Real Estate
Marubeni Itochu Sumisho Techno Steel Inc.Sale of steel productsMetal Products
Mazda Steel Co., Ltd.Shearing, slitting, and sale of steel sheetsMetal Products
Metal One Sumisho Tubular Products Co., Ltd.Processing and sales of steel piping and other steel productsMetal Products
Nissin Sugar Co., Ltd.Manufacture and sales of sugarLiving Related & Real Estate
Oga Wind Power CorporationWind Power IPPInfrastructure
Osakagas Summit Resources Co., Ltd.Investment in oil and natural gas development businessMineral Resources, Energy, Chemical & Electronics
Oshima Shipbuilding Co., Ltd.ShipbuildingTransportation & Construction Systems

P-R

Company NameDetails of BusinessSupervision Business Units
Petrocokes Japan Ltd.Manufacture and sale of petroleum needle cokeMineral Resources, Energy, Chemical & Electronics

S

Company NameDetails of BusinessSupervision Business Units
S.C. Building Service Co., Ltd.Facility management of buildings (Cleaning, equipment maintenance and security)Living Related & Real Estate
S.C.Building Service West Co.,Ltd.Facility management of buildings (Building maintenance service with a focus on cleaning and other management operations)Living Related & Real Estate
S.C. Cement Co., Ltd.Sales of cement, ready-mixed concrete and concrete productsLiving Related & Real Estate
SC-ABeam Automotive ConsultingAutomotive industry focused consultingTransportation & Construction Systems
SC Digital Media K.K.Operation management and investment activities in digital mediaMedia & Digital
SC Foods Co., Ltd.Developmental import and sale of foods, meat, beverages, grains, fats, sugars, etc.Living Related & Real Estate
SC Machinary & Service Co., Ltd.Sales of various kinds of machines and equipmentTransportation & Construction Systems
SCSK CorporationSoftware development, information processing service, communication network service, sales of package software as well as software and hardware, SI service and others, and BPOMedia & Digital
Seven Industries Co., Ltd.Manufacture and sales of laminated lumber and wood productsLiving Related & Real Estate
Shinko Sugar Mill Co., LtdRaw sugar productionLiving Related & Real Estate
SMB Kenzai Co., Ltd.Sales of various building materials and construction workLiving Related & Real Estate
Solar Power Kitakyushu CorporationSolar Power IPPInfrastructure
Solar Power Minamisoma Haramachi Inc.Solar Power IPPInfrastructure
Solar Power Minamisoma Kashima Inc.Solar Power IPPInfrastructure
Solar Power Saijyo CorporationSolar Power IPPInfrastructure
Solar Power Tomakomai CorporationSolar Power IPPInfrastructure
Sumisho Administration Services Co., Ltd.Personnel and general affairs servicesCorporate Group
Sumisho Aero-Systems CorporationSale of aerospace equipmentTransportation & Construction Systems
Sumisho Building Management Co., Ltd.Operation, management, planning and consulting service for office buildings, construction work, management and contracting for buildings and equipment including electric systems, and tenant brokerageLiving Related & Real Estate
Sumisho Global Logistics Co., Ltd. (SGL)Global Logistics Service ProviderInfrastructure
Sumisho Insurance CorporationAgent for casualty insurance and life insuranceInfrastructure
Sumisho Interior International Inc.Interior design, construction and interior product procurement, import, export, sales of furniture and carpet, and industrial materialsLiving Related & Real Estate
Sumisho Marine Co., Ltd.Daily Administration of ship finance, operation/chartering of owned vessels, and marine equipment businessTransportation & Construction Systems
Sumisho Materials CorporationTrading of precious metals and other productsMineral Resources, Energy, Chemical & Electronics
Sumisho Metalex CorporationSale of nonferrous metal products, materials for home heat solutionMetal Products
Sumisho Montblanc Co., Ltd.Planning, production and sales of white coats, service industry uniforms, work uniforms and related clothing products, as well as production and sale of linen materialsLiving Related & Real Estate
Sumisho Realty Management Co., Ltd.Investment management business, investment advisory and agency business, Type II financial instruments business, and building lots and buildings businessLiving Related & Real Estate
Sumisho Tatemono Co., LtdSales, brokerage, leasing and management of real estateLiving Related & Real Estate
Sumisho Urban Development Co., Ltd.Planning, development, management, and operation of shopping centersLiving Related & Real Estate
Sumisho Well Support Co., Ltd.Administrative servicesCorporate Group
Sumitex International Company LimitedProduction and sales of textile products and materialsLiving Related & Real Estate
Sumitomo Corporation Global Metals Co., LtdSale of steel and non-ferrous metal products, management of invested companies for processing and manufacturingMetal Products
Sumitomo Corporation Global Research Co. Ltd.Think tank within the Sumitomo Corporation Group which performs surveys and analyses of domestic and overseas political administrations, economies, and industry trendsCorporate Group
Sumitomo Corporation Power & Mobility Co., Ltd.Trade in automobiles, railcars, etc., and electric power project facilities, development and implementation of overseas electric power infrastructure and railway infrastructure, new business development in the mobility field Transportation & Construction Systems
Sumitomo Corporation Power & Mobility Co., Ltd.Trade in automobiles, railcars, etc., and electric power project facilities, development and implementation of overseas electric power infrastructure and railway infrastructure, new business development in the mobility field Infrastructure
Sumitomo Mitsui Auto Service Company , LimitedLeasing of motor vehiclesTransportation & Construction Systems
Sumitomo Mitsui Finance and Leasing Co., Ltd.LeasingTransportation & Construction Systems
Sumitomo Precision Products, Co.Manufacture and sale of aircraft components and heat exchangers Transportation & Construction Systems
Sumitomo Shoji Chemicals Co., Ltd.Sale and trade of plastics, organic chemicals, inorganic / fine chemicals and electronic materialsMineral Resources, Energy, Chemical & Electronics
Sumitomo Shoji Financial Management Co., Ltd. Financial services such as cash management, trade settlement, back-office of financial and commodity business and accounting services to Sumitomo Corporation and its subsidiariesCorporate Group
Sumitomo Shoji Machinex Co., Ltd.Sale of machinery and equipmentInfrastructure
Sumitronics CorporationElectronics Manufacturing ServiceMineral Resources, Energy, Chemical & Electronics
Summit, Inc.Supermarket chainLiving Related & Real Estate
Summit Agri-Business CorporationManufacture and sale of fertilizers and agriculture-related materialsMineral Resources, Energy, Chemical & Electronics
Summit Agro International, Ltd.Development and distribution of crop protection products, household insecticides and pet care productsMineral Resources, Energy, Chemical & Electronics
Summit Air Service CorporationTravel agencyInfrastructure
Summit-Benichu Coil Center Co., LtdPurchase, shearing, slitting, and sale of steel sheetsMetal Products
Summit Colmo, Inc.Retailer of apparel & housewaresLiving Related & Real Estate
Summit Cosmetics CorporationManufacturing, Import and Export Sales, and Research & Development for Cosmetic Product and its ingredientMineral Resources, Energy, Chemical & Electronics
Summit CRM, Ltd.Trading of carbon-related materials (coke, etc), refractories and ferrous raw materialsMineral Resources, Energy, Chemical & Electronics
Summit Energy CorporationPlanning, development and operation of domestic retailing of electric power, domestic business in electric power and energy field and controlling its 5 subsidiaries.
・Summit Mihama Power Corporation
・Summit Onahama S Power Corporation
・Summit Myojo Power Corporation
・Summit Handa Power Corporation
・Summit Sakata Power Corporation
Infrastructure
Summit Energy Development Co., Ltd.Exploration, development, production and sale of and investment in oil and natural gas etc.; investment in and financing business of the same kindMineral Resources, Energy, Chemical & Electronics
Summit Global Power Ltd.Development, asset management and technical support for power generation and desalination projects. (This company has a branch in Abu Dhabi, United Arab Emirates)Infrastructure
Summit Oil Mill Co., Ltd.Manufacture and sales of vegetable oil, and contract manufacturing, filling and packaging Living Related & Real Estate
Summit Pharmaceuticals International CorporationDrug discovery services, pharmaceutical development and supply of active pharmaceutical ingredients, intermediates and formulationsMineral Resources, Energy, Chemical & Electronics
Summit Steel Co., Ltd.Shearing, slitting, and sale of steel sheets Metal Products
Summit Wind Power CorporationWind Power IPPInfrastructure

T-U

Company NameDetails of BusinessSupervision Business Units
Taiyo Kenki Rental Co., Ltd.Rental business of construction machineryTransportation & Construction Systems
T-Gaia CorporationSelling cellular phones and serving as an official dealer for cellular phones, Providing communication solutions services mainly to companies and serving as an intermediate for fixed-line communication services, Settlement service and other new businessesMedia & Digital
Tomod's Inc.Drugstore chainLiving Related & Real Estate
Tomra Japan LimitedProduction, export, import and sales of reverse vending machines for used beverage containers (metal, plastic, and glass bottles and etc.) Collection and recycling of used beverage containers and the other material;Infrastructure

V-Z

Company NameDetails of BusinessSupervision Business Units
Yasato Kosan Co. Ltd.Owning and operating of golf courseLiving Related & Real Estate
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