May 1981
  • Started environmental audits at group companies
Apr 1983
  • Established rules for environmental management
Apr 1984
  • Established environmental management standards (OPES)
Aug 1988
  • Started to reduce the use of designated chlorofluorocarbons
Sep 1990
  • Started to reduce the use of 1, 1, 1-trichloroethane, trichloroethylene and dichloromethane

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