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Company History
| 2008 | OKAYA LANKA(PVT)LTD. is founded in Sri Lanka |
| 2005 | Head office relocated from Sangenjaya, Setagaya-Ku to Todoroki, Setagaya-Ku |
| 2004 | Affiliate Kenpo Co., Ltd. trade name changed to OSD Co., Ltd. |
| 2002 | Head office relocated to Sangenjaya, Setagaya-ku |
| 2001 | Okaya group registered ISO9001: 2000 |
| 1998 | Okaya Hong Kong Trading Ltd. is founded. |
| 1995 | China factory in Dongguan and Okaya Electric Singapore is founded |
| 1993 | Okaya Hong Kong is founded. |
| 1989 | Okaya Electric America is founded |
| 1986 | Affiliate Tohoku Rodan Co., Ltd is founded. |
| 1983 | Noise filter is VDE approved - the first for a Japanese company. |
| 1976 | CR spark quencher is CSA approved - the first for a Japanese company. |
| 1973 | Taiwan Rodan Co. is founded. |
| 1970 | Listed on the Second section of the Tokyo stock exchange. |
| 1967 | Signs contract with USA IEE to be their distributor in the Asian reigon. Company name is changed to Okaya Electric Industries, Co. Ltd. |
| 1965 | A new factory to produce electronic tubes is built in Saitama. |
| 1961 | Head office relocates to Shibuya-ku, Tokyo. Assembling and selling of USA IEE projection displays starts. |
| 1960 | Production of compact size capacitors starts at the Okaya factory. |
| 1950 | Production of the MT tube starts. |
| 1945 | The Tokyo Shirogane factory is burned down by war damage. By the navy's orders the factory relocates to Okaya-shi, Nagano, . Company name is changed to Okaya Radio Co., Ltd.. |
| 1944 | Yasuda Insurance acquires the company to increase production. Production of a special vacuum tube (Acon tube) for the Japanese Navy starts. |
| 1939 | Showa Electric Industry Ltd. is founded in Minato-ku, Tokyo |
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