| 摘要 |
PROBLEM TO BE SOLVED: To simplify sending process of direct mail and reduce its cost. SOLUTION: A body sheet 11 has printing space 12 on one face or both faces of paper which can carry any information including address information. With the address side 12 on outer face, the body sheet 11 can be folded into any designated size. Sealing pieces 13 can seal outer edges 11E of the folded body sheet 11. In this way a body sheet 11 can be folded into the designated size and weight to comply with the specification of a post card or any standard size mail and their outer edges 11E are sealed by sealing pieces 13.
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