Tested with Illusion Hunter Bow  and Boots to show the effect.
Bonus 1 & 3:
10% Weapon ATK Power bonus & when sum refine +18 or higher critical damage +10%.
Without Boots damage: 53768
With Boots damage: 57274
If refine of each is 7 or higher ASPD +2:
Without Boots ASPD: 189
With Boots ASPD: 191
iF sum of refine is 22 or higher, when dealing damage has chance to activate [Hunter's Sight] for 10 second. ATK+ 100, increase critical damage by 15% and increases damage against insect and brute race by 50%
You can clearly see the difference in the status window below.
No Hunter Sight active:
With Hunter Sight active: