Easy to remember brand name, free from connotations and brandable to almost any business product or service.
The word "extex" contains only five characters and only two syllables. Two-syllable names are exceptionally rare and extremely prestigious. Examples of two popular syllable names include Lego, Facebook and Disney.
Extex.com is a dot com domain. Dot com domains are the most prestigious domain extension in the world, famously used by websites like facebook.com. Owning a dot com says that you own the word "extex" online.