How can you check if a company is legitimate?

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Tags

1. #number
2. #phone
3. #clients
4. #address
5. #untrustworthy
6. #saying
7. #checking
8. #legitimate
9. #genuine
10. #check
11. #people
12. #customers
13. #company
14. #online
15. #website
16. #reviews
17. #other
18. #listed