Optical variable Ink/ watermark Ink/uv Invisible Ink/infrared Ink

PingWei Anti-forgery Ink Limited

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Optical variable ink

Optical variable ink is one kind of special security ink which will change color with different viewing angle.


Uv ink is a special printing one giving off visible light (400-800nm) while exposed to ultraviolet light (200-400nm).

BLACK Infrared Ink

This means that, we could see the color, for the bar code reader it is transparent and will not be able to read.

BLACK Watermark Ink

Under the sun, we observation can see a clear pattern of the watermark,widely used in the printing documents.

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