1904: Nippon Toki partnership founded.
1912: Ceramics laboratory built at Nippon Toki, research begins on producing sanitary ceramics.
1917: Toyo Co., Ltd. founded in the city of Kokura on Kyushu.
1918: Production begins of sanitary ceramics.
1937: Chigasaki plant constructed.
1946: Manufacture begins on faucet hardware.
1968: Sales begin of vanity sinks.
1969: Trademark is changed from Toyotoki to TOTO.
1970: Company name changed from Toyo Toki to Toto Kiki.
1977: Surya TOTO Indonesia established, first serious overseas venture since WW II.
1980: Washlet introduced, a toilet seat / bidet with warm water.
1981: Kitchen Unit goes on sale.
1986: Siam Sanitary Ware Co., Ltd. established as a joint venture in Thailand.
1987: The Sian Sanitary Fittings Co., Ltd. established as a joint venture in Thailand.
Taiwan TOTO Co., Ltd. established.
1989: TOTO USA Inc. established as a sales subsidiary in America.
1991: TOTO Industries (Atlanta), Inc. established as a manufacturing subsidiary in America.
1993: TOTO Singapore Office established.
1994: TOTO Seoul Office established in Korea.
Beijing TOTO Co., Ltd. Nanjing TOTO Co., Ltd. and TOTO (Dailian) Co., Ltd. established as joint ventures in China.
1995: TOTO (Beijing) Co., Ltd. established as a joint venture in China.
1996: TOTO (Malaysia) SDN. BHD. established.
TOTO (China) Co., Ltd. established as a holding company.
TOTO USA., Inc. established as a holding company.
1997: TOTO (Singapore) Co., Ltd. established as a joint as a joint venture.
1998: Hydrotect engineering developed.
1999: CeFiONtect engineering developed.
2000: TOTO receives ISO 14001 cetification in all its plants.
2001: TOTO EASTCHINA Co., Ltd. established in Shanghai, China.
TOTO Korea Ltd., established.
2002: TOTO Vietnam Co., Ltd. established.
TOTO Delhi Representative Office established in India.
2004: Xiamne Plumbing Technology Co., Ltd. established as a joint venture in China.
2005: TOTO Dubai Representative Office established in the Middle East.
TOTO Bangkok Representative Office established in Thailand.
2006: In preparation for 90th anniversary, Japanese coporate name changed from TOTO Kiki Kabushiki Gaisha to TOTO Kabushiki Gaisha
2007: TOTO Manila Representative Office established in the Philippines.
TOTO Europe GmbH established in Germany.
2008: TOTO Asia Oceania Pte. Ltd established in Singapore.