First company: Japanese company (manufacturing)
1-3 yrs: 8 days
4-5 yrs: 12 days
5-10: 15 days
10+: 20 days

Second company: US company (electronics)
1-5 yrs: 15.5 days
6-10 yrs: 18 days
10+: 22 days

Second company (revised): US company (electronics)
1-5 yrs: 12 days
6-10 yrs: 15 days
10+: 20 days
The company lower down the annual leaves to "standardize leaves in all companies in other countries"
And they said, good news is we are allowed to carry forward 1.5X annual leaves compared to previously 1x annual leaves!
They give you less annual leaves and then allow you to carry forward more, what kind of twisted logic is that?

Third company: US company (electronics)
1-3 yrs: 12 days
3+: dunno yet, haven't started to work in new company yet