I am not from Canada, but here is what I would do if I were in your position. First look at the web sites of all the cages that are out there. Find the design that looks the best. Find someone close by that might have one. Go see it in person so you can then evaluate it yourself. Then order one for yourself. During this time find a plastic maker. When the cage comes in take it to the plastic maker and have them take it apart to find out what you could produce them for. If the price is right then you have your caging company.