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commonly utilized transparent PET sheets for various toy packaging applications， PET (Polyethylene Terephthalate) Sheet (Thickness - 0.2mm & 0.4mm)

PET (Polyethylene terephthalate) Thermoformed Transparent PET Sheet

"Protect Your Fruits with Durable PET Plastic Packaging Boxes: The Ultimate Solution for Freshness and Sustainability"

Different materials vary in their ability to limit passage of gases, liquids, and solids. Metals and glass (without any pinholes) are impermeable to everything, while paper is permeable to almost everything. Due to their nonpolar molecular structure, polyolefins have a very low water permeability but are readily permeable to gases such as oxygen and carbon dioxide and to hydrocarbons.