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Infrared invisible ink marked cards contact lenses

There are infrared invisible ink contact lenses and ultraviolet invisible ink contact lenses. Today I am going to talk about infrared invisible ink contact lenses.

Infrared contact lenses is used to read the invisible back marks of marked cards. The infrared invisible ink contact lenses is processed with special material in the center, which is not only conducive to reading the invisible marks but also comfortable and harmless for human's eyes.

Only the infrared contact lenses can read the infrared invisible ink marked cards.
 

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