Andy,
I have experience in importing from China so I had an advantage but plenty of people have successfully done it anyway.
First, I had Jinma factory quote it "CIF" Boston which means they selected the ocean freight carrier, delivered it to their local seaport, and were generally responsible for it all the way to Boston. This also included insurance. This will give you total price from Jinma factory to your local "port".
Once the cargo arrives at the nearest destination that is licensed to clear customs, you will need a broker. I've never imported into Canada but the process should be similar. Your broker will process all documents, clear customs, and arrange inland freight to a loading dock near you. You'll need a way to unload it. A local factory helped me out with my backhoe and two chippers and then I had a flatbed auto wrecker bring it to my house.
You can find a broker in the phone book/online so call a half dozen and find out how much it will cost you. Ideally you want a broker who has experience with tractors so that you will be certain of meeting all applicable Canada regulations for such a vehicle, emissions, etc. Maybe Jinma can recommend one in your area.
In the US the minimum charge might be $600-800 for the document process and then after that you have to arrange trucking to your final destination. You can do it yourself or have the broker arrange it. Inland freight will be extra.
If you import spare parts or a
chipper or BH or whatever at the same time, your local broker charge might remain the same.
Hope this helps.