Tomoegawa Paper Co., Ltd.
- Manufactures, processes, trades, and sells paper, nonwoven fabric, pulp, plastics, wood, and materials for copying, printing, and recording. Based in Chuo-ku, Tokyo.
- http://www.tomoegawa.co.jp/english/

Superbag Co., Ltd.
- Active in planning, development, and designing of all kinds of paper bags and packaging.
- http://www.superbag.co.jp/e/

Oji Paper Co.,Ltd.
- Lists corporate profile, environment charter, news, financial report, and investor information. Based in Chuo-ku, Tokyo.
- http://www.ojipaper.co.jp/english/

Mitsubishi Paper Mills, Ltd
- Manufacturers of pulp, paper, and photo-sensitive materials. Specializes in high gloss papers and reversible thermo recording films. With corporate profile, R&D, news, and product information. Based in Chiyoda-ku, Tokyo.
- http://web.infoweb.ne.jp/mpm/eng/index-e.html

Hoketsu Paper Co., Ltd.
- Bilingual site displaying company history, corporate data, management, and operations. [Adobe Acrobat Reader required].
- http://www.hokuetsu-paper.co.jp/annual.html