Some people thnk the seals,trumpets,and vials,are all part of the wrath of God,but it is not true.
The vials are the wrath of God after the 7 years period,the seals,and trumpets can be considered warnings to turn the world to God.
Rev 9:18 By these three was the third part of men killed, by the fire, and by the smoke, and by the brimstone, which issued out of their mouths.
Rev 9:19 For their power is in their mouth, and in their tails: for their tails were like unto serpents, and had heads, and with them they do hurt.
Rev 9:20 And the rest of the men which were not killed by these plagues yet repented not of the works of their hands, that they should not worship devils, and idols of gold, and silver, and brass, and stone, and of wood: which neither can see, nor hear, nor walk:
Rev 9:21 Neither repented they of their murders, nor of their sorceries, nor of their fornication, nor of their thefts.
After the 6th trumpet the world will still not repent of their sins,and turn to God,so God allows the man of sin to deceive all people who do not love God.
An example is WW1,and WW2.After WW1 the world does not turn to God,but the League of Nations is set up to try to obtain peace on earth,and after WW2,the United Nations,and religious organizations to try to get the religions to cooperate with each other,and this pattern will continue of people not turning to God despite their wars,and problems,so after the 6th trumpet God gives the world the man of sin to rule over those who do not love God.
I believe the seals cover a long period of time,before the 7 years period starts,the trumpets a shorter period,and the vials for the shortest period of time,and the vials is the wrath of God.