Team NEO, an organization consisting of local chambers representing 16 northeast Ohio counties and about 4 million people, recently released a study of the region’s industrial real estate. The group’s report reveals some surprising developments in local manufacturing and Team NEO’s chief executive officer reinforced some old notions. Here’s something that might surprise many people: In northeast Ohio, ‘‘we’re using over 11 million more industrial square feet than we used in early 2004.’’ Here are some more unexpected conclusions from the data: “Northeast Ohio’s vacancy rate is at 8.4 percent, the second-lowest point in the last five years. In addition, vacancy rates for manufacturing space are the lowest they have been since 2003.’’ And for those of us in the Mahoning Valley here’s a real startler: The amount of industrial real estate vacancies is among the lowest in Northeast Ohio and substantially lower than the industrial vacancy rate in the Akron-Canton area.