Can Axles only cause the vibration at highway speed?

I replaced my axles with aftermarket axles two weeks ago and the vibration came right after I installed it. I am just wondering can axles only cause the vibration at highway speed? Or, it can also cause the vibration at any speed?

I feel the vibration especially when I hit the gas pedal and try to accelerate, my car is shaking. I can't feel anything if the speed is under 60mph. Can anyone told me the reason and help me out? it is so annoying. :(

meanwhile, I did three times tire-balance already. The third time was done by discount tire. I was told the rear driver side rim is slight bent. BUT the thing is, I did't have any vibration at any speed before I installed the aftermarket axles. ( the rest parts are the same) That is why I think it is just about the axles, but anyone can second it? thanks alot. I really appreciate.