|1933||Established as Iuchi Seieido Store.|
|1962||Incorporated as Iuchi Seieido Co., Ltd. in Kita Ward, Osaka City for the sale of scientific instruments.|
|1963||Began publishing catalog for research under realization of the importance of catalogs for marketing and the potential of plastic components in the physical and chemical fields.|
|1970||Established Tokyo Office (now the Tokyo Branch Office) with the expansion of business in the Tokyo region.|
|1982||Began to sell dedicated clean room gloves, fully entered the semiconductor-related product market.|
|1985||Started catalogs for nursing products for hospitals, fully entered the hospital / care fields.|
|1989||Set up Osaka Logistics Center in Konohana Ward, Osaka City to develop our logistics system.|
|1990||Adopted online systems for the entire company, integrated order receiving / making, warehousing / dispatching and inventory management systems.|
|1991||Established Wakayama CIC in Nokami, Kaiso District, Wakayama Prefecture to fully enter into the special surface washing field. Began sale of high-quality dust-proof products.|
|1993||Shifted headquarters to Tenma, Kita Ward, Osaka City.|
|1995||Established Tokyo Logistics Center in Iwatsuki City, Saitama Prefecture (now Iwatsuki Ward, Saitama City). Installed automated equipment to streamline logistics.
Registered over the counter shares with the Japan Securities Dealers Association.
|1997||Set up website, began interactive information communication over the Internet.|
|1998||All sites in Japan gained the international standard for quality assurance ISO9002 certification (revised to ISO9001 in 2003).|
|1999||Listed in the second section of the Tokyo Stock Exchange and the Osaka Securities Exchange.|
|2001||Listed in the first section of the Tokyo Stock Exchange and the Osaka Securities Exchange. Changed the company name to AS ONE Corporation.
Shifted the Tokyo Logistics Center to Kitakatsushika District, Saitama Prefecture.
|2002||Shifted headquarters to Edobori, Nishi Ward, Osaka City.|
|2004||Shifted Osaka Logistics Center to Yodogawa Ward, Osaka City.|
|2005||Made Ernst Hansen Co. Ltd (now the consolidated subsidiary Nikko Hansen & Co., Ltd.) a subsidiary (ownership percentage of 90%).|
|2007||Established AS ONE SHANGHAI Corporation in Shanghai, China (100% capital subscription).|
|2008||Acquired environmental ISO14001 certification.|
|2010||Made Nikko Hansen & Co., Ltd. a full subsidiary.|
|2011||Established Kyushu Logistics Center in Asakura City, Fukuoka Prefecture.|
|2012||Adopted ASCA core system.|
|2016||Acquisition of Privacy Mark.
Established AS ONE INTERNATIONAL,INC. in California,U.S.A.
|2017||Established Tonomachi Solution Lab in Kawasaki ward, Tokyo Prefecture.|
|2018||Tryumph21 Co. Ltd a subsidiary (ownership percentage of 51%).|