The presumptive GOP presidential nominee will appear in Sterling Wednesday afternoon, according to Del. David I. Ramadan (R-Loudoun), who posted information about the event on his Web site. Romney’s campaign did not immediately respond to a request to confirm the appearance. But the former Massachusetts governor is campaigning in the Roanoke area Tuesday. Ramadan’s announcement says that Romney will be appearing at EIT, which provides electronics design and production services, at 4:30 p.m. Wednesday. Doors open at 3:30 p.m. The address is 22815 Glenn Drive in Sterling.