Our predecessor was Tokyo Uoichiba Co., Ltd., which was established at the same time as the opening of Tsukiji Market in 1935 (Showa 10). This company became a statutory company in accordance with the wartime statutory company ordinance. After World War Ⅱ when this law was abolished, the company name was changed to Tokyo Suisanbutsu Co., Ltd. Although it was designated one of the closed organizations as a former statutory seafood company, the Ministry of Agriculture, Forestry, and Fisheries issued a reorganization order because of the importance of its public operations, and in March 1948 (Showa 23), Tohto Suisan Co., Ltd., was established with 7 million yen in capital as a predominate company that inherited the operations, directors, and employees of the former company.
| February 1935 (Showa 10) |
Tsukiji Fish Market Opened
 Complete view at opening time  Freight car lead-in rail  In front of the main gate at opening time |
| June 1935 Showa 10) |
Tokyo Uoichiba Co., Ltd. Established |
| April 1948 (Showa 23) |
Tohto Suisan Co., Ltd. Established |
| April 1948 (Showa 23) |
Began operations as Tohto Suisan Co., Ltd., a consignee agent for fresh seafood and processed marine products |
| April 1950 (Showa 25) |
Because of the elimination of marine products controls, the company was licensed as a wholesaler of marine products |
| March 1954 (Showa 29) |
 Completed construction of the Tokyo Freezing Plant |
| October 1955 (Showa 30) |
Stock offering on the Tokyo Stock Exchange (Over-the-counter transactions) |
| August 1956 (Showa 31) |
Completed construction of the Kushiro Minatomachi Freezing Plant |
| September 1956 (Showa 31) |
Listed on the Tokyo Stock Exchange |
| November 1962 (Showa 37) |
Completed construction of the Tohtosui Building |
| October 1966 (Showa 41) |
Increased capital to 1,000 million yen |
| March 1967 (Showa 42) |
Established Toyomi Tohto Suisan Reizo Co., Ltd. |
| October 1968 (Showa 43) |
Established Saitamaken Suisanbutsu Oroshiuri-ichiba Co., Ltd. |
| July 1969 (Showa 44) |
Established Kushiro Tohsuireitoh Co., Ltd. |
| December 1969 (Showa 44) |
Established Saitamaken Uoichiba Co., Ltd. |
| October 1971 (Showa46) |
Start of Operations at Saitamaken Suisanbutsu Oroshiuri-ichiba Co., Ltd. |
| October 1971 (Showa46) |
Start of Operations at Saitamaken Uoichiba Co., Ltd. |
| August 1973 (Showa 48) |
Capital tie-up with Chiba Gyorui Co., Ltd. |
| May 1974 (Showa 49) |
Construction completed for the Marine Transport Freezing Plant at Kushiro Tohsuireitoh Co., Ltd. |
| March 1978 (Showa 53) |
Increased capital to 1,600 million yen |
| June 1978 (Showa 53) |
Established Aero Trading Co., Ltd. |
| April 1979 (Showa 54) |
Issued shares at market value and increased capital to 1,680 million yen |
| March 1986 (Showa 61) |
Increased capital to 2,376 million yen |
| May 1990 (Heisei 2) |
Established Sunny View Enterprise Ltd. |
| October 1992 (Heisei 4) |
Established Kawagoe Suisanshijo Co., Ltd. |
| May 1993 (Heisei 5) |
Kawagoe Market opened and began operations at Kawagoe Suisanshijo Co., Ltd. |
| April 2002 (Heisei 14) |
Merged Saitamaken Suisanbutsu Oroshiuri-ichiba Co., Ltd. and Saitamaken Uoichiba Co., Ltd. |
| November 2007 (Heisei 19) |
Established Tohsui Foods Co., Ltd. |
| March 2018 (Heisei 30) |
 Completed construction of the new Logistics Center at Saitamaken Uoichiba Co., Ltd. |
