Cross border e-commerce express bags are plastic or paper bags used for packaging and transporting cross-border e-commerce goods, and their quality requirements mainly include the following aspects:

1. 耐破裂性：快递袋应具备足够的抗撕裂和抗破裂性能，能够承受运输过程中的挤压、摩擦和外力冲击，避免袋子破裂导致商品丢失或损坏。

1. Burst resistance: The express delivery bag should have sufficient tear and burst resistance, and be able to withstand compression, friction, and external impact during transportation, to avoid bag breakage causing loss or damage to the goods.

2. 强度和承载能力：快递袋应具备足够的强度和承载能力，能够承受包裹商品的重量，防止袋子在运输过程中破裂或损坏。

2. Strength and load-bearing capacity: The courier bag should have sufficient strength and load-bearing capacity to withstand the weight of the packaged goods and prevent the bag from cracking or damage during transportation.

3. 密封性：快递袋应具备良好的密封性能，能够有效防止包裹商品在运输过程中受潮、进水或外部灰尘的侵入。

3. Sealing: The courier bag should have good sealing performance, which can effectively prevent the packaged goods from being affected by moisture, water, or external dust intrusion during transportation.

4. 透明度：快递袋的透明度要求适当，能够清晰显示袋内的商品信息和标签，方便快递企业和海关对包裹的检查和识别。

4. Transparency: The transparency requirement for express delivery bags is appropriate, which can clearly display the product information and labels inside the bag, making it convenient for express delivery companies and customs to inspect and identify the package.

5. 环保性：快递袋应符合环境保护要求，尽量选择可循环利用、可降解或可回收的材料制成的袋子，减少对环境的影响。

5. Environmental friendliness: Express bags should meet environmental protection requirements, and bags made of recyclable, biodegradable, or recyclable materials should be chosen as much as possible to reduce their impact on the environment.

6. 印刷质量：如果快递袋需要印刷商品信息、条形码等内容，印刷质量应清晰、耐磨、不易褪色，以便于识别和跟踪。

6. Printing quality: If the express delivery bag needs to print product information, barcodes, and other content, the printing quality should be clear, wear-resistant, and not easy to fade, for easy identification and tracking.

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