They are used to make dumplings that will go in soups.
They are usually sold in chiller section at supermarket.
Cooking Tips
Cover with a damp towel or paper towel while working, or they will dry out on you.
Use a mixture of water and starch (cornstarch, all things being equal) to help seal them
Storage Hints
They can be frozen.
To freeze, wrap in plastic, then foil, and freeze for up to 2 months.
Thaw and bring to room temperature before using.
Language Notes
The wrappers are also referred to as “skins.”