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The Materials of the Tubes
- Sep 12, 2018 -

First of all, the materials used should meet the relevant sanitary standards, and harmful substances such as heavy metals and fluorescent agents should be controlled within the specified range. For example, tubes exported to the United States use polyethylene(PE) and polypropylene(PP) to meet US Food and Drug Administration(FDA) standards.

Second, the barrier properties of the material. The five-layer tube is thicker than the single-layer tube, hase better corrosion resistance and lower oxygen transmission rate, and it becomes popular in the cosmetic market.

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