G45 may refer to:
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List of Intel chipsets#Core 2 chipsets
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HMS Quail (G45)
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G45 Daqing–Guangzhou Expressway
The Daqing–Guangzhou Expressway (), designated as G45 and commonly referred to as the Daguang Expressway () is an expressway that connects the cities of Daqing, Heilongjiang, and Guangzhou, Guangdong. When fully complete, it will be in length.
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in China
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