I don't know where you are living now, but I sense that it is China. You'll find that many electrical things are cheaper and of better quality in Canada, so don't pay money to bring them over.
Having said that, there are a few exceptions.
Rather than have to re-buy everything in a rush, bring those items like hair blowers that have a switch between 110v and 220v.
For electronics, like computers, look at the voltage inputs stated on your electrical things. If the input allowed is 110 - 220 volts, you can use them in Canada.
I wouldn't bother with transformers, though. Heavy and expensive, and probably not useful in light of the above.