| 摘要 |
PROBLEM TO BE SOLVED: To provide a display board which itself is recoverable by ordinary garbage processing, is light, has sufficient strength, is inexpensive and is reusable as well. SOLUTION: The display board consists of lightweight boards which consist of respectively incineratable or recyclable plastic materials and form display surfaces and a frame material which reinforces and supports the lightweight boards attached to the outer peripheral edges of the lightweight boards.
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