| 1971 |
July: |
Founded at Takahata, Hino-shi, Tokyo, with a
capital of \5,000,000.- |
| August: |
Entered the water analysis business |
| December: |
Entered the odor analysis business |
| 1972 |
January: |
Entered the river water examination business |
| February: |
Entered the air analysis business |
| 1974 |
June: |
Entered the waste composition analysis
business |
| 1975 |
April: |
Opened the Chiba office - presently the East
Kanto Branch - at Chiba-shi, Chiba |
| 1976 |
May: |
Entered the environmental assessment business |
| 1977 |
July: |
Entered the odor sensing test business |
| 1982 |
February: |
Entered the air diffusion test examination
business |
| April: |
Entered the water-source water-edge
preservation planning business |
| 1983 |
September: |
Opened the Saitama office - presently the
North Kanto Branch - at Omiya-shi, Saitama |
| 1987 |
February: |
Entered the environmental planning
(consulting) business |
| April: |
Headquarters moved to Kamida, Hino-shi, Tokyo |
| June: |
Entered the asbestos measurement business |
| 1990 |
April: |
Opened the Yamanashi office - presently the
Yamanashi Branch - at Kofu-shi, Yamanashi |
| 1991 |
November: |
Entered the dioxin analysis business |
| 1992 |
August: |
Opened the Environmental Consulting Division
at Sandacho, Hachioji-shi, Tokyo |
| September: |
Opened the Environmental Basic
Research/Analysis Center at Shimoongatachou,
Hachioji-shi, Tokyo |
| 1993 |
February: |
Opened the Yokohama office at Aoba-ku ,
Yokohama-shi, Kanagawa |
| June: |
Opened the Hokkaido office - presently the
Hokkaido branch - at Sapporo-shi, Hokkaido |
| October: |
Opened the Kyushu office at Chuo-ku,
Fukuoka-shi, Fukuoka |
| 1995 |
March: |
Assessed the Environmental Management Plan of
Chofu-shi, Tokyo |
| 1996 |
July: |
Awarded the 1995 Superior Construction Award
from the Chief of Construction Bureau of the
Ministry of Construction, Kanto Branch |
| November: |
Publicly traded on Japan OTC market.
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