What is a Class 4 laser?

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Tags

1. #scattered
2. #radiation
3. #damage
4. #devastating
5. #highest
6. #including
7. #result
8. #permanent
9. #lasers
10. #exceed
11. #dangerous
12. #laser
13. #diffuse
14. #viewing
15. #indirect
16. #definition
17. #class
18. #direct
19. #product
20. #cause