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Jochen Fritsche is standing in front of a machine through which wafer-thin discs run in unison, changing their color from light gray to blue. “What’s happening here is physics,” he says. In the machine, the slices of silicon, called wafers, are treated in a vacuum process and provided with a nano-layer of silicon – whereby they also take on the typical blue color known from solar cells. 3000 wafers per hour, 24 hours a day. “The production is designed to run 365 days a year,” he says. “Even at Christmas.”
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