Open GNA File
GNA extension files are graphics link presentation data from Genigraphics.
About Genigraphics
Genigraphics is a development company specializing in wide format printing services and also providing poster session services for medical and scientific conferences in the US and Canada.
As additional data, this company began in 1973 as a division of General Electric.
The GNA file extension is primarily related to data in a specific format for graph link presentations.
Although it is an old graphic format derived from NASA, in reality, it is still in force.