| December 1939 | The company was founded as Hokuetsu Machine Engineering Company,Ltd. In the city of Sanjo in parallel with establishing the association to lure factories. |
|---|---|
| November 1943 | The company manufactured the closed die forgings of airplane parts as a manufacturing plant under the direct control of Nakajima Aircraft Company unitil the end of WWⅡ. |
| February 1944 | The name was changed to Nakajima precision Forging Co, Ltd. |
| November 1945 | The sale of for gings, primarilly tools, was started. |
| June 1951 | The “monkey wrench(adjustable wrench)”received the permit to carry aJIS mark(the first adjustable wrench qualifled for JIS mark) among Japanese manufacture. |
| March 1962 | The TOP association was restructured to expand and strength on the marketing system. |
| September 1963 | The name was changed as TOP Kogyo Company, Ltd. |
| 1964-70 | The company was endorsed for its contribution to Japan's export by the Ministry of International Trade and Industry. |
| June 1966 | The Tokyo Office was opened. |
| December 1966 | The company was designated as a JIS mark certified plant and as an excellent quality control company by the Director General of Tokyo Trade aon Bureau. |
| November 1967 | The Osaka Office was opened. |
| December 1967 | The Minister's prize of Labour, Health and Welfare was awarded as to contribution to the field of unemployment Insurance. |
| June 1969 | The Prime Minister's prize was awarded to Mr.Maruyama, President of TOP Kogyo for his contribution to Japan's export. |
| May 1970 | The Nagoya Office was opened. |
| January 1975 | The Sendai Office was opened. |
| June 1976 | The Fukuoka Office was opened. |
| August 1977 | The Sapporo Office was opened. |
| August 1981 | The Forging and Metal Casting Plant was moved to the Tsukanome Idustrial Park. |
| July 1982 | The entire factory was moved to the Tsukanome Industrial Park. |
| February 1987 | A contract was singed with Klein Tools in Chicago as to the manufacturing technology of adjustable spanners. |
| June 1989 | The Kanagawa Office was opened. |
| Octobar 1990 | The Saitama Office was opened. |
| April 1996 | A seven-storied building was constructed for the Tokyo Office. |
| June 1998 | The Miki Office was opened. |
| June 1998 | ISO9002 accreditation was acquired (from JQA). |
| September 2000 | ISO9001 accreditation was acquired (from JQA). |
| February 2008 | The Osaka Office was moved to new office due to expanded business. |
| Octobar 2008 | The second warehouse building was completed in the precinct of the main office. |
