| In 1963 | in June of this year, Mr.Mitsuo Nakamura started an individual enterprise Asahi Shokai for the manufacture of fire safes and transport business of heavy weight cargo,in Tokyo. |
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| In 1968 | in March, he organized Asahi Safe Co., as president. |
| In 1973 | in December, he closed Asahi Safe Co. and established a new safe company named Eiko Kogyo Co.,Ltd with a capital of 5 million Yen. |
| In 1974 | in April, he built a factory to manufacture small sized fire resistant safes, in Daigo-machi, Kuji-gun, Ibaraki-Ken. |
| In 1975 | in April, the capital of the above Campany was increased to ten million Yen. in December, the capital was increased to fifteen million Yen. |
| In 1976 | in Feburary, the capital was increased to twenty million Yen. in July, the above was approved as a JIS authorized factory. in September, a sales office in Tokyo, and in November opened a sales office in Sapporo City in Hokkaido. |
| In 1978 | in March, the capital was increased to ¥26,500,000.- and opened Osaka office in April. in October, the capital was increased to ¥35,000,000.- |
| In 1979 | in January, the capital was increased to ¥45,000,000.- in May, the capital was increased to ¥55,000,000.- in June, the head office was moved to the present location of 336-1,Yata, Daigo-machi, Kuji-gun, Ibaraki-ken. in October, the capital was increased to ¥57,150,000.- in December, a new office room and engineering development center were completed at the site of Factory No.2. |
| In 1980 | in April, the capital was increased to ¥77,150,000.- Sendai branch office was also opened. in October, the capital was increased to ¥99,950,000.- Fukuoka branch office was also opened. |
| In 1981 | in August, Nagoya branch office was also opened. in October, Factory No.3 was newly built. |
| In 1982 | in December, Warehousing and Distribution Center building was completed. |
| In 1983 | in September, Niigata branch office was also opened. in December, absorbed YAMADA SAFE CO.,LTD (the oldest safe company in Japan established in 1875) and the capital was also increased to ¥133,950,000.- |
| In 1984 | in Feburary, a new building was completed as Engineering Development Laboratory. Eiko Safe was amalgamated by Eiko Yamada the capital was increased to ¥250,000,000.- |
| In 1985 | in March, a new joint-venture factory for safe was established with Thai Union Steel Co.,Ltd. in the suburbs of Bankok,Thailand, whose name is Leerungruang Steel Co.,Ltd. (called"LEECO") |
| In 1986 | in January, Mr, Taizo Nakamura took office newly as president and the capital was increased to ¥300,000,000.- |
| In 1987 | in June, the capital was increased to ¥400,000,000.- |
| In 1988 | in September, computer on-line system was operated between head office and branch offices. |
| In 1989 | in September, Himeji branch office was opened. |
| In 1993 | in February, rental of burglary safe was begun. |
| In 1995 | in August, sale of security goods like body armor, alarm etc was begun. |
| In 1996 | in March, special body armors were delivered to the Tokyo Metropolitan Police Department. in August, Sappro factory was established for custom made steel funiture for office, store, home etc. |
| In 2000 | in April, sale of commercial safes with compensation was begun. |
| In 2001 | in August, LEECO Thailand was certified to conform to ISO 9001. |
| In 2002 | in June, for increase of necessity, 2nd factory was established in Bangkok, Thailand. in July, Eiko Japan was certified to conform to ISO 9001. Furnace for JIS fire test was completed in factory. |
| In 2005 | in December, head office building was moved to the new head office building in Sumida-ku, Tokyo. |
| In 2007 | in April, Daigo factory was approved as a NEW JIS autorized factory and No.4 factory equipped with powder painting facility was newly built. in August, Eiko was amalgamated with Kencho Co.,Ltd and Kencho division was started. |
| In 2011 | in May, for increase of necessity, 3rd factory was established in Bangkok, Thailand. |
| In 2014 | in January, the capital was changed to ¥100,000,000.- |
| In 2015 | in May, Akihabara showroom was opened in Chiyoda-ku, Tokyo. |
| In 2016 | in April, Daigo factory was rebuilt. |
| In 2017 | in January, a new office and a sales office in Daigo factory were built. |
| In 2023 | in November, a new distribution center was built next to Daigo factory. |
| In 2024 | in September, the showroom was moved to new location of Okachimachi in Taito-ku, Tokyo. |