They're telling you where you can't buy the product

Source: http://en.stihl.ca/find-your-local-stihl-dealer.aspx

Not many manufacturers make a big deal out of where their products are not available. But Stihl uses its 1,000+ independent dealers as a key point of differentiation. The firm obviously feels that independent retailers give better service and provide better support for the Stihl brand. (And I'm sure that the current Stihl dealers would not be at all happy to see the brand at Canadian Tire or Home Depot.)

For Stihl, the distribution channel is a key point of differentiation. (Norco, the bicycle company also eschews big box retailers.) I own a Norco road bike, too bad I'm not in the market for a chainsaw.