Tokyo Industrial Coated Paper Co., Ltd.

To calm the sales competition of silkworm cocoon paper for sericulture, a joint sales company for writing paper was established by three stores: Nakai, Hattori, and Okamoto (silkworm cocoon paper sales)

1919: Yoshi Amalgamated Sale, Company: (selling papers for sericulture) established

Establishment of Shimachu Keichi and Shimachu Trading Company

1923: Shimanaka Shokai established

Reorganization of the joint sales company into a corporation

Shimachu Trading Company imported capacitor paper (CP) and aluminum foil from Germany

The retail division of Shimachu Trading Company and the joint sales company for writing paper added the Japan-Germany trade rights for CP, and Tokyo Industrial Coated Paper Limited Company was established (capital of 180,000 yen)

1943: Tokyo Sangvo Yoshi, Limited established

Capital increased to 500,000 yen

Capital increased to 1 million yen

Reorganized into a corporation with a capital of 6 million yen

1954: Tokyo Sangvo Yoshi Co., Ltd. established (Capital: 6 million yen)

Start of metallized paper (MP) sales

1955: Started selling metallized papers (MP) for capacitors

Start of capacitor film (EPP) sales

1960: Started selling capacitor films

Start of aluminum electrolytic capacitor separator (ECP) sales

1961: Started selling electrolytic capacitor paper (ECP)

Capital increased to 9 million yen

1964: Increased the company's capital to 9 million yen

Start of import and sales of transformer boards (TB)

Start of metallized film (MF) sales

1968: Started selling metallized films (MF) for capacitors

Establishment of subsidiary Mihato Corporation (Gujo City, Nakatsugawa, Gifu Prefecture, cutting and processing)

1969: Established Mihato Co., Ltd., a sheet cutting and processing subsidiary, in Nakatsugawa, Gifu Prefecture

Start of glass paper (PG) sales

1972: Started selling Transformerboard (TB) and Glass papers

Establishment of Taipei liaison office (reorganized into local corporation Tosan Co., Ltd. in 1986)

1975: Established a liaison office in Taipei (the office reorganized into a Taiwanese subsidiary in 1986: TOHSAN CORPORATION)

Surpassed annual sales of 10 billion yen, established the development department (currently the functional materials sales department) and the trading department (currently the overseas sales department)

1983: The yearly sales revenue exceeded 10 billion yen

65th Anniversary, Capital increased to 27 million yen

1984: Celebrated the 65th anniversary of the company's founding and increased the capital to 27 million yen

1986 : Established Subsidiary Tohsan Corporation (Taipei, Taiwan)

Capital increased to 54 million yen

1996 : Increased capital to 54 million yen

1997 : Increased capital to 180 million yen

Construction of a company warehouse in Tsuzuki Ward, Yokohama City

1998 : Completed the construction of a TSY-Owned warehouse in Yokohama

2003 : Opened a representative office in Shanghai (the office closed in 2009)

85th Anniversary, 50th Anniversary of Company Establishment

2004 : Celebrated the 85th anniversarv of the company's founding and the 50th annrversary of the incorporation as a joint-stock film

Surpassed annual sales of 20 billion yen

2007 : The yearly sales revenue exceeded 20 billion yen

2014 : Moved our head office to Hongokucho, Nihonbashi

100th Anniversary, 65th Anniversary of Company Establishment

2019 : Celebrated the 100th anniversary of the company’s founding and the 65th anniversary of the incorporation as a joint-stock firm

Establishment of subsidiary TOKYO SANGYO YOSHI MALAYSIA SDN. BHD.

2023: Subsidiary TOKYO SANGYO YOSHI MALAYSIA SDN. BHD. Established