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  1Q19 2Q19
Actual Revised Guidance* Original Guidance Guidance
Net Revenue
(US$ billion)
7.10 7.0-7.1 7.3-7.4 7.55-7.65
Exchange Rate
30.82 30.6 30.6 30.85
Gross Margin 41.3% 41%-43% 43%-45% 43%-45%
Operating Margin 29.4% 29%-31% 31%-33% 31%-33%
* Company revised 1Q19 guidance to reflect the impact from Fab 14B Photoresist Material Incident.

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