Canton fair held in Guangzhou(Canton) China, located in south China, near Hong Kong.
The word 'Canton' of Canton Fair is another name of the Guangzhou city China.
'Guangzhou' is the pronunciation of Mandarin.
'Canton' is the pronunciation of Cantonese where people speak here.
The official name of Canton Fair is "China Import and Export Fair".
The China Import and Export Fair is one of the most famous trade fairs in the world. Therefore, people like to give it a simple name to let you know where this fair is. So we all call it "Canton Fair", means the great fair held in Canton.