Investor Presentaiton

о о MKS to Acquire Electro Scientific Industries (ESI) esi. EXECUTING ON A 0 0 0 0 Key Strategy for MKS • Acquiring a market leading technology company that serves common markets with complementary customer solutions Expands Industrial segments of PCB, Electronic Thin Film, and Electronic Component manufacturing • Expands MKS' addressable market by $2.2B and adds $304M in CY17 Revenue Expected to be accretive to Non-GAAP earnings and free cash flow in the first 12 months ••mks MKS PROPRIETARY 18

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