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Polypropylene - Wikipedia
Polypropylene | Properties, Definition, & Uses | Britannica
What is Polypropylene? Composition, Properties, and ... - BYJU'S
Polypropylene (PP) - Types, Properties, Uses & Structure
Find out What Polypropylene Is and What It's Used For
All About Polypropylene: How it's Made and Used - Xometry
Polypropylene (PP) | What Is It, Types, Properties, and Uses