hi ari
the black tape on the bottom just means that former owner re-hinged the film holders.
they are still good
(i do the same thing with mine)
pretty much any 4x5 film holders will work with your camera .. but if you buy used
watch out for ones with slots /grooves on the side ( for graflex slr cameras )
and ones that are DEEP with a spring at the bottom ( for dry plates ).
i have never seen shen hao film holders .. if they are as nice as their cameras,
you will be very happy
good luck!
john