Members are national organisations aiming for the promotion of the use of heating oil for domestic heating as a competitive and efficient fuel, taking care of the protection of the environment.
Austria
IWO-Austria
Belgium
Informazout
Germany
IWO-Germany
Ireland
OFTEC - Ireland
Luxembourg
Mazout info Luxembourg (MIL)
Switzerland
Union Pétrolière / Erdoel Vereinigung
United Kingdom
OFTEC - UK
