I have answered this earlier.
MEXC and MX are both ERC20 tokens. The only difference is MEXC is for the public, and MX (the private token) is for the EMS players to use to purchase our EMS products and services.

To get MX, they have to purchase MEXC from the MEXC token holders, via MX P2P Exchanger, with cash.

MX is pegged to 1 MX == USD 1.
Reason is MEXC shall appreciate in values, and we don't want our products to become expensive over time. MX is the answer for this volatility in pricing as the balancing act.

Let me know if I need to elaborate this further.