| 摘要 |
A container that can be collapsed and returned to the sender for re-use. The container is made of a flat thermoplastic board comprised of a first sheet and a second sheet held in spaced relation to one another by webbing. A single sheet may be 0.020 inches thick more or less. The container has square corners, is strong and durable. The container has sides and ends formed by cutting one sheet, leaving the other for a hinge and attaching the sides and ends by means of Velcro.
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