| 摘要 |
PROBLEM TO BE SOLVED: To obtain an easily reusable rainwater waterproof sheet when a waste is disposed of, and the rainwater waterproof sheet can be easily reutilized as many times as required when the waste is treated by using the same. SOLUTION: The rainwater waterproof sheet 1 which is so used as to prevent an infiltration of the rainwater or the like at a waste treatment plant or the like and is characterized by providing a plurality of connecting spatulas 3 at both ends of the sheet.
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