1937

- Uruma Iron Works was founded in Naka-ku, Yokohama

1945

- Due to the war, the company moved its headquarters to Tsurumi and resumed operations

1946

- Began designs and manufactures of various machinery

1950

- Company name changed to Uruma Iron Works Co., Ltd.

1952

- Began modifying/repairing various machinery equipment and parts

1954

- Company name changed to Tsurumi Machinery Co., Ltd.

1955

- Opened Yokohama Office within Nissan Motor's Yokohama Plant

1958

- Opened Kawasaki Plant; began machining large equipment

1961

- Shonan Machinery Co., Ltd. was established from Tsurumi Machinery

- Opened Oppama Office in conjunction with the construction of Nissan Motor's Oppama Plant

1965

- Opened Zama Plant

1969

- Opened Tochigi Plant

1982

-Started business with Fujikoshi due to increase in robot-related orders

1986

- Started business with FANUC

1993

- Opened Kyushu Plant

2011

- Opened Kikoubu

2016

- Established a local subsidiary in Mexico

2020

- Acquired all shares of Rokutan Machinery Co., Ltd., making it a subsidiary

2021

- Acquired all shares of Yasuda Engineering Co., Ltd., making it a subsidiary

2023

- Established Shonan Holdings Co., Ltd. 

- Tochigi Plant is relocated

- Installation of solar power generation and electric vehicle chargers as part of efforts to achieve SDGs

2025

- Established a local subsidiary in the United States