| 1944 | Incorporated as Nakayo Tsushinnki Seisakusho (Communications Works) Co., Ltd. in Setagaya-ku, Tokyo. |
|---|---|
| 1958 | Awarded the Deming Application Prize for Small and Medium Enterprises. |
| 1963 | Maebashi Plant commenced operation. |
| 1967 | Became an integrated telephone manufacturer. |
| 1969 | Established an Associated Sales and Installation Company, Nakayo Densetsu (Electrical Installation) Co., Ltd. |
| 1971 | Delivered electronic switching equipment for the first time to NTT (the Nippon Telegraph & Telephone Public Corporation). |
| 1973 | Numata Plant commenced operation. Established sales offices in Osaka, Hiroshima and Kumamoto. |
| 1974 | Changed the company name to Nakayo Telecommunications, Inc.
Listed on the Tokyo Stock Exchange (2nd Section). Established an associated company, Maebashi Shoko, Inc. |
| 1976 | Established Nagoya sales office. |
| 1977 | Reorganized Nakayo Densetsu and Kansai Nakayo Densetsu into a new company, Nakayo Electronics Co., Ltd. |
| 1979 | Established Yokohama sales office. |
| 1980 | NAKAYO's computer-controlled electronic PABX equipment was designated by NTT as Japan's first version of that kind. |
| 1981 | Established a liaison office in Singapore. |
| 1982 | Established Shibuya Corporate Business Division. |
| 1983 | Increased capital to 1,513,075,000 yen. Established Corporate Engineering Division. Established Nakayo U.S.A. Inc. in New York. |
| 1984 | Gunma Plant commenced operation. Established branch offices
in Omiya, Shizuoka and Kanazawa. Increased capital to 4,909,075,000 yen. |
| 1985 | Moved the head office to Shibuya-ku Tokyo. |
| 1991 | KITANIHON Operation Center opened. |
| 1995 | Certified ISO9001 compliant by JAPAN QUALITY ASSURANCE ORGANIZATION (JQA) |
| 1996 | Opened NAKAYO HOME PAGE on Internet |
| 1998 | Certified ISO14001 compliant by Japan Audit Certification Organization for Environment and Quality (JACO) |
| 1999 | Established an office in Osaka. Established a branch office in Takasaki. |
| 2000 | Established HONG KONG NAKAYO CO., LTD in Hong Kong. |
| 2005 | Listed on the first section of the Tokyo Stock Exchange on March 1st., 2005. |
