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1990s


1990
The 60th anniversary of the founding of the company was marked.


1991
The company won the "Mecenat Awards" at the First Mecenat Awards in 1991.


1993
The brand name Marui Propane was changed to Marui Gas to commemorate the 40th anniversary of its release.


1994
Kashima LPG Joint Stockpiling Base (225,000 tons) and Kitsuregawa Separate Gas Plant were completed and started operation.
1994


1995
The Gas canister, Cassette-Feu, was urgently supplied to areas devastated by the Great Hanshin-Awaji Earthquake.The company received the Excellent Prize at the 11th Corporate Communication Awards from the Japan Federation of Economic Organizations.


1997
The Iwatani Group Environmental Charter was established.Tokyo head office was moved to the present location.


1998
Mr. Tatsuo Yagii became President and Mr. Naoji Iwatani became Honorary Chairman.


1999
Osaka head office and Kinki block branch received ISO14001, following Tokyo head office and Tokyo Metropolitan block branch in 1998. An integrated certification of ISO14001 was acquired in 2000 for All block branches and higher-ranked offices.