- American Ag-Tec International, Ltd., Delavan, Wisconsin is a global company marketing its proprietary agricultural, biotechnology, seeds, potato minitubers, and value-added foods worldwide.www.ag-tec.com
- Quantum Tubers Corporation, Delavan, Wisconsin - a global company making a quantum leap in seed potato production through rapid-growth biotechnology for pathogen-free, virus-free, potato minitubers.www.quantumtubers.com