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Company Name RIGHT MFG. CO., LTD.
President Osamu Tsunoda
Founded June 1947
Capital 50 million JPY
Employees 600 (included group companies)
  • Contract manufacturing - Optical equipment・Semiconductor manufacturing equipment・FPD manufacturing equipment・Medical equipment.
  • Original brand products – Righton ophthalmic instruments / Rightport: semiconductor loadport)
Location Head office
1-47-3 Maenocho, Itabashi-ku, Tokyo 174-8633 Japan
TEL: +81-3-3960-2246 Business locations here
Group company TSUNODA CO., LTD.
QINGDAO RIGHT CO., LTD. (Qingdao, China)
Main customer Nikon Corporation, Canon Medical Systems Corporation, etc


1947 RIGHT MFG started business of manufacturing knitting machine.
1949 Start business with Japan Engineering Industry (Nikon Corporation) for camera business
1950 Start business with Tokyo Shibaura Electric Company (Toshiba)
1952 Tsunoda Seisakujo was established.
1963 RIGHT MFG CO., LTD. was established.
Sakado factory was opened.
1973 Osato factory (Miyagi Prefecture) was opened.
1975 TOHOKU RIGHT MFG. CO., LTD. was opened.
1985 The head office building of RIGHT MFG was newly constructed at Itabashi-ku, Tokyo
1990 AOMORI RIGHT MFG. CO., LTD. was established.
1997 Ishii factory was opened.
2001 R&D center was opened at Itabashi-ku, Tokyo
2003 Start of Righton brand business (ophthalmic instruments)
Start of Loadport business (semiconductor transfer equipment)
2004 Qingdao factory (China) was opened.
2011 New Osato factory (Miyagi Prefecture) was opened
2014 Change company name from Tsunoda Seisakujo to TSUNODA CO., LTD.

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