All links will open in that window. Selling to businesses is more cost effective. Orders from businesses are, on the average, higher in dollar value.
Businesses also order larger quantities of an item.
Here's an interesting fact. No wonder so many B2C businesses are not making a profit. Venture capitalists are getting tired of funding businesses that don't make a profit. The big secret is that the amount of business done on the Net between businesses far exceeds online consumer spending. From these figures, you can easily see where the money is.