| 摘要 |
PROBLEM TO BE SOLVED: To significantly save the time and labor for laying a safety net. SOLUTION: This connecting tool comprises one tape 1 and at least two kinds of buttons provided near both ends of the tape in the longitudinal direction of the tape, or a pair of female and female first buttons 4 (4a and 4b) and a pair of female and male second buttons 5 (5a and 5b). The central-side first buttons have directivity, and show resistance to opening pressure from the net side in use.
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