Jet A aviation jet fuel is produced primarily for the USA market. Jet A aviation jet fuel as a standard spec has a free point of -40 C. of which is allowed to be utilized exclusively in the USA.  The most commonly used fuels for commercial aviation are Jet A and Jet A-1, which are produced to a standardized international specification. The only other jet fuel commonly used in civilian turbine-engine powered aviation is Jet B, which is used for its enhanced cold-weather performance.