Question

Please answer these questions
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Answer 1

Examples are :

1. epoxy , silicone

2. polypropylene , polyethylene

3. Polyester fiberglass , polyurethanes

4. polyester , acrylic

5. flax and hemp

6. silk , wool

7. nylon , rayon

8. Polycot , polywool

9. Glass , metals

10. wood , paper

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