I read something about Weifeng tripods and heads being low-cost (made in China), good clones of quality brand-name products.

Has anyone here used their products? Are they any good?

got 3 of them , sold 2 of them to friends , everybody happy.
for the price (less than $200 for the EI717) , there is nothing to say.
using it with HC-9, FX1, EX1 and other purpose (light stand, video projector stand).

How does a 717 head compare to something like a Manfrotto/Bogen 501 head?