Sineann Wines on Wine lists?
Have never seen them here. Your quickest route to an answer would probably be to email or otherwise contact the winery and ask if they have a Quebec agent. If they do, the agent can tell you which restaurants carry them. FWIW the Sineann website lists only B.C. among Canadian jurisdictions where the wines are to be found (Vancouver-based New World Wines represents the winery in that province).