Associated companies

Maruzen Petrochemical Co., Ltd.

Address 2-1-1, Irifune, Chuo-ku, Tokyo 104-8502
Tel: 81-3-3552-9361 Fax: 81-3-5566-8391
Founded October 10, 1959
Capital JPY 10 billion
Description of business

Import and export, production, processing, sales, and purchase of basic petrochemical products such as ethylene, propylene benzene, etc., solvents such as methyl ethyl ketone, etc., and new products such as poly para-vinylphenol, etc.

Website http://www.chemiway.co.jp/en/

Chiba Butadiene Industry Co., Ltd.

Address 2-1-1, Irifune, Chuo-ku, Tokyo 104-0042
Tel: 81-3-3552-9374
Founded August 23, 1969
Capital JPY 490 million
Description of business Production, sales, and purchase of butadiene and its sub-products

Goi Chemical Co., Ltd.

Address 14, Goi minami kaigan, Ichihara-city, Chiba 290-0045
Tel: 81-436-22-6091 Fax:81-436-22-2888
Founded October 9, 1972
Capital JPY 50 million
Description of business Production and sales of organic chemical products

Maruzen Techno Service Co., Ltd.

Address 3, Goi minami kaigan, Ichihara-city, Chiba 290-8503
Tel: 81-436-22-8455 Fax: 81-436-22-8180
Founded March 1, 2001
Capital  JPY 50 million
Description of business
  • Design, construction, and maintenance management of equipment, pipework, construction, landscaping, air-conditioning, instrumentation, and electrical equipment, etc
  • Sales of valves, pipework, pipework joints, steel, packing, and containers, etc.
  • Operational management of petroleum and petrochemical product equipment
  • Transport and disposal of industrial waste
  • Nonlife insurance sales agency operetions

Keiyo Ethylene Co., Ltd.

Address 2-1-1, Irifune, Chuo-ku, Tokyo 104-0042
Tel: 81-3-3552-9373
Founded September 11, 1991
Capital JPY 6 billion
Description of business Production and processing, sales, and purchase of basic petrochemical products such as ethylene and propylene.

Keiyo Monomer Co., Ltd.

Address 11-6, Goi minami kaigan, Ichihara-city, Chiba 290-0045
Tel: 81-436-24-8535 Fax: 81-436-24-8529
Founded June 22, 1993
Capital JPY 2.4 billion
Description of business Production and sales of vinyl chloride monomer

Keiyo Polyethylene Co., Ltd.

Main office 7F Nihonbashi 313 bldg., 3-13-5 Nihonbashi, chuo-ku, Tokyo 103-0027
Tel: 81-3-3246-6991 Fax: 81-3-3246-6993
Osaka sales office 3-1-9 Awaji-machi, Chuo-ku, Osaka-city 541-0047
Tel: 81-6-6205-0851  Fax: 81-6-6205-0856
Founded August 7, 1997
Capital  JPY 480 million
Description of business Sales of high-density polyethylene
Website http://www.kpe.co.jp/

Sunplac Corporation

Main office 2-1-1, Irifune, Chuo-ku, Tokyo 104-0042
Tel: 81-3-3552-4375  Fax: 81-3-3552-4372
Factory 2381 Nanahongi, Kamisato-machi, Kodama-gun, Saitama 369-0306
Tel: 81-495-33-7725  Fax: 81-495-33-7726
Founded November 1, 1979
Capital JPY 50 million
Description of business
  • Production and sales of products made from polyolefins combined with minerals and plastics
  • Businesses related to the above
Website http://sunplac.jp/en/

Ube-Maruzen polyethylene Co., Ltd.

Address 1-1-1, Shibaura, Minato-ku, Tokyo 105-6791
Tel: 81-3-5419-6164 Fax: 81-3-5419-6249
Founded October 1, 2004
Capital JPY 490 million
Description of business Production and sales of low-density polyethylene
Website http://www.ube-ind.co.jp/ump/index.html(Japanese only)

Maruzen America Inc.

Main office 2000 West Loop South Suite 1100 Houston, TX 77027 USA
Tel: +1-713-966-5790 Fax: +1-713-572-2285
Founded July 8, 1986
Capital US$200,000
Description of business
  • Collecting scientific and technical information in the USA
  • Market development for goods exported by, and execution of trade engineering services on behalf of, Maruzen Petrochemical Co., Ltd.