Exdura Green has an excellent non-stick ability, it is colour stain resistant and metal utensil resistant. PFOA/ PTFE free! Advantages of Exdura Green1) PFOA/ PTFE Free. Unlike Teflon or other non-stick products Exdura Green does not contain these harmful chemicals.PFOA, or perfluorooctanoic acid, is a processing agent widely used in manufacturing that has been detected in water, food, wildlife, ...