http://www.cbsa-asfc.gc.ca/import/postal-postale/menu-eng.html
Canadian Border Services Agency.
There is no free trade agreement between China and Canada.
There will be provincial sales tax and a $9.95 Canada Post service charge in addition to the duty.
There is a good chance that the item will be Not As Described or never arrive at all. Read the seller's feedback including his Detailed Seller Ratings for clues.