The Interessengemeinschaft Farbenindustrie AG was a German chemical and pharmaceutical conglomerate formed in 1925. In China I.G. Farben marketed itself as 大德颜料厂 - "Big German Dye Factory". It's official Chinese distribution company, Deutsche Farbenhandelsgesellschaft Waibel & Co. aka DEFAG (德孚洋行), was founded in Shanghai on January 1, 1927.