What are invisible ink and matching contact lenses?

Looking around the world, science and technology have obviously developed to a new level. Various high-tech products have entered thousands of households, bringing great convenience to our lives. Therefore, as human beings, we are still very happy. Invisible ink and matching contact lenses are very popular nowadays. What functions do these things have? Let’s learn about invisible ink together.

Invisible pens also have great commercial uses. The food, cigarettes, and high-end liquor you buy may have traces of invisible pens. The main reason why merchants do this is to prevent cross-selling (products sent to one place are transferred to a market in another region) and to prevent counterfeiting. Brand manufacturers set different prices based on the specific conditions of the sales area, and distributors may resell products from lower-priced markets to higher-priced markets in order to obtain higher profits, which harms the interests of manufacturers. If there is a mark with an invisible pen, the brand manufacturer can monitor sales without the dealer knowing.

UV pen purple pen internal marker pen

UV pen UV10UV pen: also known as purple light pen, disappearing pen, etc. in China. This pen is used to mark various materials such as textiles and paper. It is colorless and odorless under normal circumstances, but it is clearly visible under ultraviolet light.

How to use

First, use this pen to write anywhere, and then use ultraviolet light, heating and other effects to make the handwriting appear.

Notice:

1. Don't write too deeply, otherwise it will leave marks on the paper. 2. Water-based invisible ink pens can only be written on paper. Writing on other places can easily be erased and washed off with water.

In ancient times, people also used plant juice to write to achieve the effect of an invisible pen.

Key Features

1. You can write down any of your secrets without anyone seeing them.

2. You can mark your items without destroying their appearance and easily distinguish them from other similar items.

3. When holding various exhibitions, make invisible marks to sort out the order of your equipment and items.

4. You can get a short-term tattoo on your face or arm to become the focus of the disco and pub.

5. Give it as a gift to your friend to give him/her an unexpected surprise.

6. Give it to your customers as a promotional gift, so that they can be surprised and have a deeper impression of your company.