Founded in 1970, OBI GmbH & Co. Deutschland KG is the second largest DIY retailer in Europe, and the fourth largest in the world, behind The Home Depot, Lowe's and Kingfisher plc. It is headquartered in Wermelskirchen, Germany, and belongs to the Tengelmann Group.
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Approximately 99 percent of all color blind people suffer from red-green color blindness. Statistics reveal that around 75 percent of people suffering from red-green color blindness have problems with green perception, while the remaining 24 percent have problem with red perception. But this doesn't mean that a person suffering from red-green color blindness tends to mix up between red and green colors only. The fact is that the problem prevails in the whole color spectrum. The most common form of color blindness is deuteranomaly, a form of red-green color blindness. Red-green color blindness is a recessive sex linked, and therefore we see that more men are color blind than their female counter parts.