Domestic Group Companies | About Us | Sumitomo Metal Mining Co., Ltd.

Mineral Resources Business

Sumiko Resources Exploration & Development Co., Ltd.

Address

8-21, Toranomon 3-chome, Minato-ku, Tokyo 105-0001, Japan

Phone · Facsimile

Phone: 81-3-5405-2172
Facsimile: 81-3-5405-2175

Operations

Resources geological surveys
Civil engineering geological surveys
Test boring
Civil engineering and construction work
Surveying
Environmental surveys
Sale of drilling equipment

URL

http://www.sred.co.jp/english/

Smelting & Refining Business

Shisaka Smelting Co.,Ltd.

Shisaka Island (lit. “four sloped islands”) is located around 20km off the coast of the city of Niihama in Japan’s Ehime Prefecture. As the name would suggest, this is actually a group of four islands; Minoshima, Ienoshima, Myojinshima, and Nezumijima, with the plant being located on Ienoshima island. With a number one priority of protection of the natural environment, Shisaka Smelting Co., Ltd. undertakes recycling operations where it leverages smelting and refining technology to recover zinc from the ash left over from steel making in furnaces.

Facility

Address: 5-3, Nishibara-cho 3-chome, Niihama-shi, Ehime 792-0011, Japan
Detailed map: Google Map
Phone · Facsimile: Phone: 81-897-34-6820
Facsimile: 81-897-33-7762
Operations: Manufacture of crude zinc oxide

Hyuga Smelting Co., Ltd.

Hyuga City in Japan’s Miyazaki Prefecture is an industrial city that is home to Hososhima Port, which forms a gateway to the sea in central Kyushu. Hyuga Smelting Co., Ltd. (shareholder ratio: Sumitomo Metal Mining 60%, Nippon Steel Stainless Steel 25%, MITSUI & CO., LTD. 15%) leverages the superb advantages of the location of the plant to produce ferronickel while ensuring harmony with the beautiful nature of the area.

Facility

Address: 5, Funaba-cho, Hyuga, Miyazaki 883-8585, Japan
Detailed map: Google Map
Phone · Facsimile: Phone: 81-982-52-8101
Facsimile: 81-982-53-5513
Operations: Ferro-nickel smelting
URL: https://hyuga-smelting.co.jp/

Mitsui Sumitomo Metal Mining Brass & Copper Co., Ltd.

Address: Futatsumiya 656-1, Ageo-Shi, Saitama 362-0017, Japan
Phone · Facsimile: Phone: 81-48-775-7111
Facsimile: 81-48-775-9189
Operations: Manufacture and sale of copper & brass products and processed copper and brass products
URL: http://www.msmmbc.co.jp/ (Japanese Version Only)

Sumiko Logistics Co., Ltd.

Address

5-3, Nishibara-cho 3-chome, Niihama, Ehime 792-0011, Japan

Detailed map

Google Map

Phone · Facsimile

Phone: 81-897-37-2474
Facsimile: 81-897-37-3477

Operations

Marine transport
General port transportation
Port services
Land transportation
Non-life insurance agency
Packaging operations
Water supplyg
Waste disposal related operations

URL

http://sklco.com/(Japanese Version Only)

Acids Co., Ltd.

Address: 10-6, Shimbashi 1-chome Minato-ku, Tokyo 105-0004, Japan
Phone · Facsimile: Phone: 81-3-6281-4765
Facsimile: 81-3-5962-8049
Operations: Manufacture and sale of sulfuric acid and related products

MS Zinc Co., Ltd.

Address: 18-16, Shimbashi 1-chome Minato-ku, Tokyo 105-0004, Japan
Phone · Facsimile: Phone: 81-3-3591-3110
Facsimile: 81-3-3591-3125
Operations: Purchase of raw materials of crude zinc oxide

Materials Business

Sumiko Kunitomi Electronics Co., Ltd.

Address: 351-1 Kunitomi, Kyowa-cho, Iwanai-gun, Hokkaido 048-2143, Japan
Detailed map: Google Map
Phone · Facsimile: Phone: 81-135-72-1211
Facsimile: 81-135-72-1200
Operations: Manufacture of crystal products and magnetic materials
URL: https://www.sumiko-kunitomidenshi.jp/(Japanese Version Only)

Ohkuchi Electronics Co., Ltd.

Address: 1755-2, Ohkuchi-Ushio, Isa, Kagoshima 895-2501, Japan
Phone · Facsimile: Phone: 81-995-22-7511
Facsimile: 81-995-22-8579
Operations: Manufacture of functional inks and crystal products, recycling of precious metals
URL: http://www.ohkuchielectronics.co.jp

SMM Precision Co., Ltd.

Address: 4-4 Ougibuchi, Ougida, Noshiro, Akita 016-0122, Japan
Phone · Facsimile: Phone: 81-185-70-1161
Facsimile: 81-185-70-1166
Operations: Manufacture of optical communications components
URL: https://www.smmp.co.jp

GRANOPT Co., Ltd.

Address: 4-4 Ougibuchi, Ougida, Noshiro, Akita 016-0122, Japan
Phone · Facsimile: Phone: 81-44-223-4010
Facsimile: 81-44-223-4011
Operations: Manufacture and sale of rare earth iron garnet (RIG)
URL: https://www.granopt.jp/en/

Niihama Electronics Co., Ltd.

Address

1-10, Oji-cho, Niihama, Ehime 792-0008, Japan

Phone · Facsimile

Phone: 81-897-37-2411
Facsimile: 81-897-37-2412

Operations

Manufacture of adhesiveless copperclad polyimide film
Manufacture of battery materials

URL

https://www.niihamadenshi.jp (Japanese Version Only)

Shinko Co., Ltd.

Address: 12238, Nakaminowa, Minowama-machi, Kamiina-gun, Nagano 399-4692, Japan
Phone · Facsimile: Phone: 81-265-79-0121
Facsimile: 81-265-79-4833
Operations: Development design, manufacture and sale of substrate for multi layer / double-sided wiring board
URL: http://www.shinkoss.co.jp (Japanese Version Only)

N. E. Chemcat Corporation

Address

2-4-1 Hamamatsucho, Minato-ku, Tokyo 105-5127, Japan (World Trade Center Building South Tower, 27F)

Phone · Facsimile

Phone: 81-3-3435-5490
Facsimile: 81-3-3435-5484

Operations

Manufacturing and sale of automotive catalyst and chemical catalyst
Precious metal recovery and refining

URL

http://www.ne-chemcat.co.jp/eg/

Nippon Ketjen Co., Ltd.

Address: 1-2-1, Shibaura, Minato-ku, Tokyo 105-6791, Japan (Seavans North, 20F)
Phone · Facsimile: Phone: 81-3-5442-5061
Facsimile: 81-3-5442-5070
Operations: Manufacture and sale of hydroprocessing catalysts/off-site regeneration service and catalysts reactivation service
URL: http://www.nippon-ketjen.co.jp/en/

Sumitomo Metal Mining Siporex Co., Ltd.

Address: 11-3, Shimbashi 5-chome Minato-ku, Tokyo 105-0004, Japan (Shimbashi Sumitomo Building)
Phone · Facsimile: Phone: 81-3-3435-4660
Facsimile: 81-3-3435-4651
Operations: Manufacture and sale of ALC (Autoclaved Light-weight Concrete) and other construction materials/ Manufacture and sale of seismic isolation devices
URL: http://www.sumitomo-siporex.co.jp (Japanese Version Only)

Sumico Lubricant Co., Ltd.

Address: 11-3, Shimbashi 5-chome Minato-ku, Tokyo 105-0004, Japan (Shimbashi Sumitomo Building, 7F)
Phone · Facsimile: Phone: 81-3-5425-6702
Facsimile: 81-3-5401-0471
Operations: Manufacture and sale of various lubricants (particularly special lubricants containing molybdenum)
URL: http://www.sumico.co.jp/e/

Ohkuchi Materials Co., Ltd.

Address: 1746-2, Ohkuchi-Ushio, Isa, Kagoshima 895-2501, Japan
Phone · Facsimile: Phone: 81-995-22-8421
Facsimile: 81-995-22-9774
Operations: Manufacture of leadframes

Sumiko Energy Materials Co., Ltd.

Address: 1-1 Nakamaru, Yamadaoka, Naraha-machi, Futaba-gun, Fukushima, 979-0513, Japan
Phone · Facsimile: Phone: 81-240-25-8005
Facsimile: 81-240-25-8011
Operations: Manufacture of battery materials
URL: https://www.sumiko-em.co.jp (Japanese Version Only)

SICOXS CORPORATION

Address: 11-3, Shimbashi 5-chome Minato-ku, Tokyo 105-0004, Japan (Shimbashi Sumitomo Building, 7F)
Phone · Facsimile: Phone: 81-3-3437-5220
Facsimile: 81-3-3437-5222
Operations: Development, Manufacture, Sales, of SiC substrate for power semiconductor
URL: https://www.sicoxs.com/en/

Other Business

Sumitomo Metal Mining Engineering Co., Ltd.

Address: 11-3, Shimbashi 5-chome, Minato-ku, Tokyo 105-8716, Japan
Phone · Facsimile: Phone: 81-3-5425-4431
Facsimile: 81-3-5425-5727
Operations: Environment sector machinery & equipment, Plant survays, etc. design, manufacturing and repair & maintenance
URL: http://www.smmec.co.jp/en/

Sumiko Techno-Research Co., Ltd.

Address

17-2, Isoura-cho, Niihama, Ehime 792-0002, Japan

Phone · Facsimile

Phone: 81-897-34-3411
Facsimile: 81-897-33-1864

Operations

Sample-collection, preparation and analysis of non-ferrous metals
Analysis of non-ferrous metal / functional materials
Analysis of the operational control / R&D of the SMM Group
Environmental measuring/water quality certification, air, soil, noise, vibration, etc.
Measuring the working environment
Environmental assessment and ecological examination accompanying various types of development activities

URL

https://www.sumikou-techno.jp/ (Japanese Version Only)

Sumiko Technical Service Co., Ltd.

Address

1-6, Soubiraki-cho, Niihama, Ehime 792-0001, Japan

Phone · Facsimile

Phone: 81-897-33-1050
Facsimile: 81-897-33-1570

Operations

Commission-based work about processing mineral ore and artifact made with nonferrous metals
Commission-based work in area of nonferrous smelting
Commission-based work in area of battery materials manufacturing
Commission-based work about cleaning and maintenance for welfare facilities
Commission-based work about weeding and pruning
Golf practice range management
Real estate business

URL

https://www.sumiko-ts.co.jp/(Japanese Version Only)

Igeta Heim Co., Ltd.

Address: 16-11, Takadanobaba 2-chome, Shinjuku-ku, Tokyo 169-0075, Japan (Takadanobaba 216 Building, 4F)
Phone · Facsimile: Phone: 81-3-5292-0816
Facsimile: 81-3-5292-0815
Operations: Renovation of steel frame and reinforced concrete apartments and condominiums as well as those built by ALC method (Buildings and homes)

Japan Irradiation Service Co., Ltd.

Address: 2600, Ishigamitojuku, Tokai-mura, Naka-gun, Ibaraki 319-1101, Japan
Phone · Facsimile: Phone: 81-29-270-5111
Facsimile: 81-29-270-4581
Operations: Irradiation sterilization service for pharmaceutical products, medical instruments, and pharmaceutical containers,etc., /Modification of various industrial materials
URL: http://www.jisco-hq.jp/ (Japanese Version Only)

JCO Co., Ltd.

Address: 2600, Ishigamitojuku, Tokai-mura, Naka-gun, Ibaraki 319-1101, Japan
Phone · Facsimile: Phone: 81-29-287-0511
Facsimile: 81-29-282-7884
Operations: Management of facilities using uranium and related waste
URL: http://www.jco.co.jp/(Japanese Version Only)