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Delivering O&K quality to users around the world.

With domestic bases in the Kansai, Chubu, and Kanto regions, we have built backup systems in case of disasters.
Our Osaka and Gunma plants also function as global export bases.
We also have group companies and joint ventures overseas,
allowing us to deliver O&K quality not only domestically but also to users all over the world.

Company name O&K Company
Representative Kazuta Oku, President
Founded Jan. 1925
Capital 50 million yen
Number of employees 260 (As of Mar. 1, 2017) 
Business Manufacture and sale of cold heading steel wire for domestic and international markets
Offices
(Domestic bases)

[Operational Headquarters/Osaka Plant]
2-8-81 Nakajima, Nishiyodogawa-ku, Osaka, Osaka 555-0041 Google Map

Tel.06-6471-0110 Fax.06-6472-0554
[Nagoya Plant]
〒490-1445 7-3 Kanaoka, Tobishima-mura, Ama-gun, Aichi 490-1445 Google Map
Tel.0567-55-2121 Fax.0567-55-2130
[Gunma Plant]
2925-1 Yabuzuka-cho, Ota, Gunma 379-2301 Google Map
Tel.0277-78-8888 Fax.0277-78-8881
[Registered Headquarters/Technological Development & Training Center]
12-25 Higashiyama-cho, Higashiosaka, Osaka 579-8027 Google Map
Tel.072-988-1101 Fax.072-988-1108

GROUP COMPANIES DOMESTIC BASES / GROUP COMPANIES

O&K One
Japanese companies are expanding their business around the globe based on their cutting-edge technologies and
high-quality products and services.
O&K, as a team, joins hands to assist our customers in continuing to deliver the Japanese quality
beyond national boundaries and develop ourselves together.
国内拠点 / グループ会社

DOMESTIC BASES

業務本部・大阪工場
Operational Headquarters/Osaka Plant
The Osaka Plant uses an A-to-Z integrated system to supply domestic and overseas customers.
Address:
2-8-81 Nakajima, Nishiyodogawa-ku, Osaka, Osaka 555-0041
Tel. 81-6-6471-0110 Fax. 81-6-6472-0554
名古屋工場
Nagoya Plant
Located adjacent to Nagoya Port, the Nagoya Plant features a production system based on rapid material acquisition and quick delivery times.
Address:
7-3 Kanaoka, Tobishima-mura, Ama-gun, Aichi 490-1445
Tel. 81-567-55-2121 Fax. 81-567-55-2130
群馬工場
Gunma Plant
The Gunma Plant features the latest production systems in order to supply eastern Japan in a timely manner.
Address:
2925-1 Yabuzuka-cho, Ota, Gunma 379-2301
Tel. 81-277-78-8888 Fax. 81-277-78-8881
[Registered Headquarters/Technological Development & Training Center]
The O&k Headquarters combines a plant with multiple types of wire processing/prototyping facilities and an employee education training center.
Address:
12-25 Higashiyama-cho, Higashiosaka, Osaka 579-8027
Tel. 81-72-988-1101 Fax. 81-72-988-1108

O&K American Corp.

Chicago Plant
Chicago Plant
Address:
4630 W.55th Street, Chicago, IL. 60632
Tel.773-767-2500 Fax.773-767-4717
Seymour Plant
Seymour Plant
Address:
1625 Bateman Road, Seymour, IN. 47274
Tel.773-767-2500 Fax.812-522-7530

OVERSEAS BASES

Kobe CH Wire (Thailand) Co., Ltd.
Kobe CH Wire (Thailand) Co., Ltd.
Address:
67/16 Moo 5 Chuam Samphan Road, Kokfad, Nongjok,
Bangkok 10530 Thailand
Tel:(66)02-988-0576 Fax:(66)02-988-0954
Kobe CH Wire (Thailand) Co., Ltd.
Kobelco CH Wire Mexicana, S.A.deC.V.
Address:
Circuito Santa Fe No.179, Col.Puerto Interior,
C.P.36275, Silao, Guanajuato
Tel:+52-472-135-2900