It is customary for Class C to charge sales service fees without handling fees.
However, it is not excluded that some fund companies are unconventional, and Class C also charges fees. That's either fish in troubled waters or excellent performance, and no one will buy it. Fish in troubled waters will change back to normal routine sooner or later, otherwise only the liquidation will end, and those with excellent performance may continue.
Therefore, before buying a fund, you should think about how to charge, just look at the prospectus. There are also sales organizations that have compiled data publicity.