1947

Oct.

The Company was established in Marugame, Kagawa Prefecture, with a capital of 2 million yen, as a producer of carbon disulfide.

1957

Oct.

No. 1 Tokushima Plant (now Tokushima Plant's Yoshinari location) was constructed and began operations in the production of sodium sulfate.

1961

May

CMC production began at No. 1 Tokushima Plant.
We applied CMC to wall material later.

1962

Jun.

No. 2 Tokushima Plant (now Tokushima Plant's Kitajima location) was constructed.

Oct.

The Company's shares were listed on the Second Section of the Tokyo Stock Exchange.

1963

Oct.

The Company's shares were listed on the Second Section of the Osaka Securities Exchange.

1964

May

Japan's first operations to produce chlorinated isocyanurates were launched at No. 2 Tokushima Plant.

1968

Jul.

The Company entered the fine chemicals business and began sales of imidazoles.

1969

Jun.

SHIKOKU KOSAN CORPORATION was established as a subsidiary.

Dec.

The Company began production of OSP(Organic Solderability Preservative) for PWBs(Printed Wired Board) and other electronic components.

1970

Apr.

NIPPON RYUTAN KOGYO CORPORATION (currently SHIKOKU RYUTAN CORPORATION ) was established as an affiliated company.

Sep.

The Company began production in the field of housing materials, launching production of interior finishes at No. 2 Tokushima Plant.

1972

Jun.

The Company began production of accordion gates.

Nov.

SHIKOKU FINE CHEMICALS CO., LTD. (currently SHIKOKU KEIZAI KANTO CO., LTD.) was established as a subsidiary.

1975

Jan.

NIHON KENSOU CO., LTD. (currently SHIKOKU KEIZAI CORPORATION) was established as a subsidiary.

Mar.

The Company moves its share listings from the Second to First Sections of the Tokyo Stock Exchange and Osaka Securities Exchange.

Jul.

Tadotsu Plant was constructed.

Nov.

Full-scale production of imidazole began at No. 2 Tokushima Plant.

1979

Oct.

The Company launched production of aluminum shutters.

1981

Jun.

The Company opened a representative office in Los Angeles.

1984

Jul.

Production of insoluble sulfurs “MUCRON” began at Marugame Plant.

1985

Dec.

SHIKOKU INTERNATIONAL CORPORATION was established in the United States.

1989

Apr.

The Company began test marketing of Bacteria enzymes “HIPOLKA”.

1990

Apr.

The Company established its Tokyo Head Office (now Makuhari Branch Office).

1992

Sep.

The Research Center (now R&D Center) was constructed.

1995

Oct.

Ranzan Plant was constructed.

1997

Aug.

The Company's head office was relocated and rebuilt in Doki-cho, Marugame, Kagawa Prefecture.

1999

Jun.

The executive officer system was introduced.

2003

Apr.

The Company ceased trading of its shares on the Osaka Securities Exchange.

2005

Aug.

SHIKOKU ENVIRONMENTAL CONTROL CENTER COMPANY (currently SHIKOKU ENVIRONMENTAL BUSINESS COMPANY) and
SHIKOKU ENVIRONMENTAL MEASUREMENT CENTER COMPANY(currently SHIKOKU ANALYTICAL LABORATORIES) were acquired as subsidiaries.

2006

Jul.

Shikoku OM (Shanghai) Co.,Ltd. [now Shikoku (Shanghai) Co.,Ltd.] was established.

2010

Sep.

The newly quality control laboratory was constructed at Tokushima Plant's Kitajima location.

2012

Apr.

Insoluble sulfur production facilities was enhanced.

Nov.

Shenzhen Representative Office was established.

2013

Aug.

Tokushima Advanced Chemicals Plant-3 (TAP-3) facility was constructed.

2014

Sep.

NIPPON RYUTAN KOGYO CORPORATION(currently SHIKOKU RYUTAN CORPORATION) was acquired as a subsidiary.

2015

Apr.

Taiwan Representative Office was established.

Apr.

Singapore Branch was established.

2016

Oct.

Physical Testing Laboratory was constructed at R&D Center.

2017

Mar.

Insoluble sulfur production facilities was enhanced.

Apr.

NIPPON SHIKOKU KOHKI CORPORATION (currently SHIKOKU KOHKI CORPORATION) was acquired as a subsidiary.

2021

Apr.

Tokushima Advanced Chemicals Plant-4 (TAP-4) facility was constructed.

2022

Apr.

Chlorinated isocyanurates production facility, NEO2022 was constructed.
The Company transitioned from the First Section to the Prime Market of the Tokyo Stock Exchange following the market restructuring.

2023

Jan.

The Company converted to a holding company structure and changed its name to SHIKOKU KASEI HOLDINGS CORPORATION.
Chemicals and Housing Materials business, and shared service division spun off.

Apr.

MASUDA CHEMICAL INDUSTRIES CO., LTD. was acquired as a subsidiary.

2024

Apr.

SHIKOKU INDIA PVT. LTD. was established.

May.

The Makuhari Branch of SHIKOKU CHEMICALS CORPORATION was relocated to the Tokyo Branch (Nihonbashi, Chuo-ku, Tokyo).

2025

Jun.

The Osaka Branch of SHIKOKU CHEMICALS CORPORATION (Suita City, Osaka Prefecture) was relocated to Kita-ku, Osaka City.
NIWAKYU CO., LTD. was acquired as a subsidiary.

Nov.

SHIKOKU KASEI (THAILAND) LTD. was established.

Dec.

CSP CO., LTD. and Re DESIGN HOME CO., LTD. were acquired as subsidiaries.