Here is a document that might help.
custom tariff canada
When I imported my Shapeoko 3, then the threaded tables and other accessories, I ended up paying duties, simply beacuse it was wrongly declared at Carbide3D’s end.
I supplied all the necessary information to Edward, so that mistake does not happen again.
The right code needs to be supplied as well as a certification of manufacture origin.
You may contact a custom broker simply to ask, and maybe do the brokerage for you.
The brokering fees will be different from shipping companies. UPS will charge you extra to cover the taxes on it, etc.
Place a few calls before ordering, that might save you some dinero in the end.