What is fr4 material?

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5. At what temperature does fr4 burn?
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Tags

1. #flame
2. #glass
3. #composed
4. #extinguishing
5. #fiberglass
6. #laminate
7. #woven
8. #cloth
9. #epoxy
10. #resin
11. #composite
12. #material
13. #resistant
14. #grade
15. #reinforced
16. #designation
17. #binder