Spring rolls are often filled with sliced vegetables, pork, or shrimp, so the casing should be flexible.  I think a tough but not brittle edible casing is preferred.  What kind of casings do you want?  Do you want a crisp and tasty spring roll?  A spring roll filled with tender, shredded pork, or something else?
assitant
Is this an activity in your cooking?  How do you cook spring rolls?  Can you describe your cooking process?
assistant
How do I make casing for spring rolls?
user