Generally speaking, the biggest difference between the two is the rate, and the other differences are not big.

There is no subscription fee for China-Europe Medical Health Mix C, while there is subscription fee for A, no sales service fee for A and sales service fee for C. The sales service fee is charged every year, and the subscription fee is only charged once. According to the characteristics of the two, you can choose A for those who don't go in and out frequently for a long time, and C for those who go in and out frequently for a short time.