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| Zipper Size | Classification | ||||
|---|---|---|---|---|---|
| Closed-end | Open-end | Two-way open end | Two-way closed end (Type "O") | Two-way closed end (Type "X") | |
| 3# | √ | √ | √ | √ | √ |
| 4# | √ | √ | |||
| 5# | √ | √ | √ | √ | √ |
| 7# | √ | √ | |||
| 8# | √ | √ | √ | √ | √ |
| 10# | √ | √ | √ | √ | √ |
| 15# | √ | √ | |||
| 20# | √ | √ | |||









