Gunawan Jusuf Over the course of his long and impressive career, Gunawan Jusuf has led the Sugar Group Companies to enormous growth when it comes to many products, not the least of which is Gulaku, a premium refined sugar product that has become a household name all over Indonesia. That’s not the only product, however, of course; just the most popular. As the CEO of the Sugar Group Companies, the very accomplished Gunawan Jusuf has the duty of overseeing the operations of a diverse collection of companies that grow and refine sugar and produce a wide variety of sugar products that are among the most popular food products in all of Indonesia.