• ADOB, Poland
• Aglukon, Germany
• ATP Nutrition, Canada
• Bayer CropScience, Germany
• Copenhagen Consensus
• FBSciences, USA
• Golden Valley Agricultural Research Trust
• HarvestPlus
• ICL Fertilizers, Israel
• Int'l Fertilizer Ind. Assoc., France
• Int'l Plant Nutr. Inst., USA
• Int'l. Zinc Assoc., USA
• Int'l Zinc Nutr. Consult. Group, USA
• K+S KALI GmbH, Germany
• Mosaic Co., USA
• OMEX Agrifluids Ltd., England
• Sabanci University, Turkey
• SQM, Belgium
• Valagro, Italy
• Zing.Org
• Zinc Saves Kids