If you are in Canada, it is not possible to import from anywhere but the USA, AFAIK. If you find a way to do it, remember that the electric will likely be the wrong voltage and frequency (and even if it does match up, it is illegal to plug it in). The propane will also not be certified for the US or Canada and thus you will be unable to fill it (if you have external bottles you could rig something up, but again, it is illegal). The door may be on the wrong side. Europeans often have very different methods of dealing with water and sewer hookups (The idea in Europe is for short stays, you bring your own water to the trailer for a day or two, and you bring cassettes of used water to a dump station).
If you managed to get it over, to make the trailer legal as far as electrics and propane goes, you will need to rip out all the propane system (and propane appliances) along with the electrical system (and electrical appliances). You may not get insurance on it until you do. You can, of course, then have a legal setup installed. Likely the plumbing will also violate code, with the same results, though at least in that case the liability is far lower (Nobody to electrocute, no trailer park to blow up, just a soggy ruined trailer that insurance decides to not cover).
That is not to say European standards are low. They are as high or higher than ours. The trouble is, no matter how high the standards are, things sometimes go wrong. If your equipment is certified, if those bad things happen, insurance will cover you. If it is not certified, "?????" is the answer. Normally for small additions that are done to standard, I'd say insurance won't care (but they can). However, they most definitely will care when the ENTIRE RV doesn't comply...
Plus, heck, at a minimum you will need to change connectors for the propane, along with changing all electrical outlets and plugs. You might even need to change the yoke. And good luck getting parts, tires, etc, etc. :(
I agree, however, US/Canadian RVs seem to be made far more poorly than is necessary. However, don't forget that Europeans consider US/Canadian roads "rough service". You'll even see that written for a lot of world spec cars when they come over here. That means a European TT could be much more fragile than an American one and survive just fine on their smooth roads, but fall apart at the first foot deep pothole here.