Canadian war factories were safe from bombing. Canada became an arsenal, and was Britain's chief overseas supplier of war materiel. Canada did not accept American Lend-Lease aid. Actually Canada ran its own lend-lease program for its allies called "Mutual Aid", supplying its allies with four billion dollars worth of war materiel. A further credit of a billion dollars was given to Britain. PS. With the war in Europe concluded and Great Britain on the cusp of bankruptcy the Canadian federal governemnt forgave two billion dollars in debt.
Canada produced it's own tank the Ram Cruiser, and while they were never used in combat due to inadequate armament they were used in variant form such as the Kangaroo. http://www.mapleleafup.org/vehicles/cac/ram.html