One of the most well known companies for non stick frying pans is the French company Tefal. Tefal (a blend of the words TEFlon and ALuminium) was formed in France in 1956 and at the end of their first year they were producing 100 pans a day.

Tefal wanted to show their customers when they had sufficiently preheated their Tefal Frying Pan so developed Thermo-spot technology. The Thermo-spot is an integral part of the non stick coating and indicates when the optimal temperature has been reached by turning solid red.

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