“Im-Ex” stands for Import-Export, which is the main function of the company. The original logo (before the re-design) was a flatter looking globe with an airplane circling it.
In the current version, a rounder, more glossy globe with deep colors was used with a comet circling instead of a plane. On the tail of the comet are the words IMPORT EXPORT. You’ll also notice that the path travels over the Asian continent to locations on the west coast, symbolizing our main trading route, although it’s not expected that many people will catch the symbolism or detail.