What is the best packing method for closed-cell rubber sponge sheet?

What is the best packing method for closed-cell rubber sponge sheet?

Closed-cell rubber sponge consists of innumerable sealed gas-filled cells. The cells are vulnerable to heavy pressure and creases. In order to reduce creases being caused in packing, the recommended method for sponge sheet is s to be laid flat inside a crate to keep them secured.

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