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| No swelling by UV ink, clean solvent for UV ink and IPA. |
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| Design to grade up hydrophilicity substantially |
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Enable to have stable water supply since hydrophilicity is graded up substantially. |
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No Rib mark for long periods. |
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| Extremely fast response since it can supply thin water film. |
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Enable to control water film to extremely thin and homogeneous film and lessen spoilage. |
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