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Yes, you can use the V-1 visitor visa for a business visit, until its expiry date. Canada's temporary resident visas (aka visitor visas) are good for tourism, business and transit.
From the Immigration Canada FAQ:
I got a multiple-entry temporary resident visa to visit a relative in Canada last year. Can I use it to travel to Canada on a business trip?
Yes, as long as it has not expired. Make sure you have documents that support your business visit to Canada. See Business visitors: Checklists for more information.