Avoids direct contact with the sewing line, reducing friction and extending durability. The upgraded reciprocating function ensures smoother operation and makes the zipper suitable for high-demand applications such as workwear and military gear.

Avoids direct contact with the sewing line, reducing friction and extending durability. The upgraded reciprocating function ensures smoother operation and makes the zipper suitable for high-demand applications such as workwear and military gear.
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