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The original design of zip-lock bags required the zipper to be heat-sealed onto the bag, which was time-consuming and costly.

Bruce 发表于 2024-10-26 15:17:04 [显示全部楼层] 回帖奖励 阅读模式 关闭右栏 0 8
The original design of zip-lock bags required the zipper to be heat-sealed onto the bag, which was time-consuming and costly.
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