Invisible ink, also known as security ink, is a substance used for writing, which is invisible either on application or soon thereafter, and which later on can be made visible by some means. Invisible ink is one form of steganography, and it has been used in espionage. Other uses include anti-counterfeiting, property marking, hand stamping for readmission, fun children's games, and marking for the purpose of identification in manufacturing.

We are the manufacturer of offset ink in Guangzhou,China with our own Product research and development department .we aim to provide high quality offset ink and giving excellent service to the client.

Also we allow small quantity of uv offset ink order.because we respect your choice,and think about the long term cooperation.

What's more,if it possible ,you can come to our company and cheak the offset ink effect.

I think it would be much better than talk online.