Pans made in "non-stick" surfaces are often likely to give off harmful fumes if cooked to high temperatures.
Pans made of "non-stick" surfaces are often likely to give off harmful fumes if cooked to high temperatures.
Pans made in "non-stick" surfaces are often likely to give off harmful fumes if cooked to high temperatures.
Pans made of "non-stick" surfaces are often likely to give off harmful fumes if cooked to high temperatures.
To indicate the composition of the material, the correct idiom is "made of," and any other preposition would be incorrect.