Company History 1986~2000

Garbage collection<br />by female workers

Garbage collection
by female workers

Hiyoshi Cyclone Game at 8th Hachiman Tenbin Festival

Hiyoshi Cyclone Game at 8th Hachiman Tenbin Festival

Completion of Hiyoshi Technical Lab Center

Completion of Hiyoshi Technical Lab Center

Sponsoring the Satellite Symposium of CREST Dioxin 2001

Sponsoring the Satellite Symposium of CREST Dioxin 2001

1986 Entrusted with the maintenance and management of the relay pumping station of the South-Central Regional Sewerage Office.
Registered by the Japan Industrial Safety & Health Association as a working environment measurement institution for the program to subsidize joint health and safety improvement projects for small and medium-sized enterprises.
1987 Acquired a license for the sales of general high-pressure gases.
1988 Registered by the Ministry of Construction as a sewage disposal facilities maintenance administrator (Registration No. 62-53) – the only such registered agency in Shiga Prefecture.
1989 Registered for agricultural chemical sales.
Registered for fertilizer sales.
Received a letter of appreciation from the Governor of Shiga Prefecture for making great contributions to the technical training of overseas trainees.
1992 Received a letter of appreciation from the Japan Vocational Ability Development Association for making contributions to the diffusion and development of technical promotion projects.
1994 Changed the company name to Hiyoshi Corporation.
1995 Considered a business to analyze dioxins.
Held a speech contest.
1996 Acquired a license for a general trucking transportation business.
Commended by the Minister of Labour for contributions to competence examination.

Started to receive orders for analysis of dioxins (extraction only).

1997 Completed the research building (Technical Lab Center).
Commended by the Nippon Kenshokai Foundation for international contributions on environmental issues.

Introduced HRGC/MS for analysis of dioxins for the first time in Shiga Prefecture.

1998 Started research and development with Xenobiotic Detection Systems International, Inc. (XDS) as CALUX® Assay R&D partners.
1999 Licensed by the Ministry of Health and Welfare as a designated water quality inspection agency.
2000 Concluded a license agreement with XDS on CALUX® Assay (rapid assay method for dioxins).