As an innovative, technical and service focused partner, the Royal Duyvis Wiener Group wants to contribute to the optimizing and innovation of production processes of all its international food customers with focus on cocoa & chocolate, nuts & seeds.T Duyvis Wiener Germany is an experienced machine manufacturer, well known for its portfolio in the chocolate – and cocoa industry. Conches, melters, mixers, kneaders, pumps and pulverizing equipment belong to their core business.