Factory owner can upgrade its level as factory experience increases: factory experience equals twice the sum of Energy that was spent by this factory workers.
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Factory level has a great influence on factory productivity.
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=== Factory relocation ===
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Factory owner can move his factory to his region of [[Residency|residency]] at any time.
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=== Factory shutdown ===
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In case of factory shutdown the owner gets back 75% of his gold and resources that he spent on it.
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You can only close your factory after you fired every worker.