Hi Choi，

If you use ePacket, it may takes about 7-10 working days to Canada. But as far as I know, the service is not available fron China post offices but only by online shoppings. If you want the fast way, you could also choose EMS (Express Mail Service) which is available from China Post office. The delivery time for it is about 7 days. But the two ways are both with high postage rate.

EMS will be charged 280 RMB for 500g. If the package is less than 280, it will also be charged 280 RMB.
For ePacket: Handling fee is CNY 22 for each piece and the shipping rate of CNY 0.07/gm.