QCS provides pricing and marketing services to growers supplying cane to Mackay Sugar and to Mackay Sugar.

Raw sugar is priced and marketed on behalf of growers (GEI sugar) and Mackay Sugar, and is sold to both domestic and export customers.

QCS markets molasses on behalf of Mackay Sugar, in a combination of export, domestic stockfeed, and domestic ethanol sales.

QCS is wholly owned by Mackay Sugar, and carries out the following functions on its behalf: