This invented and modern name is perfect for a consumer goods or e-commerce company.
The word "cartamax" contains eight letters and three syllables. Successful brands using three syllable names include Grammarly, Sainsbury's and Toshiba.
Cartamax.com is a dot com domain. Dot com domains are the most desirable top-level-domain in the world, used by famous websites like youtube.com. When most people think of a website, they think of a dot com.