In the case of the packaging factory, the government provided the land and the shell of a building.

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Philips ships the device charged from the factory with "play-through" packaging that allows shoppers to hear the device within its plastic cocoon.

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"Because all the food in our supermarket will be grown on site we won't need a big processing factory to make packaging and we won't have to burn lots of fossil fuel to transport it across the globe, " he said.

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