Every one know about fan that it has 3 wings and 1 to 5 speed of upgrade switch. Like that you have one structure about that. But american fans has 4 wings. We also have 4 wings fan but we use only 3 wings fan. But america has only 4 wings fan. Now we are going to see the reason of that.
America is a cool city because of that reason they use only 4 wings fan. What is the comparison of cool city and 4 wings fan. 4 wings fan gives low air and that is also hot air. So 4 wings fan is only use at cool cities.
Our country doesn’t have cooling temperature. So we use 3 wigs fan. 3 wings fan gives more amount of air. So that we have 3 wings fan and america has 4 wings fan. That’s it.