A medical skin marker pen is used by medical personnel to mark a patient's skin during medical procedures. Gentian violet solution as ink, divided into conventional and very fine nib and other specifi...
The Rt Ball Point Pen is a writing tool that uses BALL bearings to bring writing out of the writing medium. It is also a PEN that is often used in daily life, but do you know the types of PEN that are...
A ballpoint PEN with a viscosity between water and oil is called an RT GEL PEN. And what are its characteristics? If you are interested, let's look down together!
The best thing about the DISPOSALBE FOUNTAIN PEN is that it's easy to use, doesn't get your hands dirty, and is easy to carry around, so students love it. So how does it replace the toner?
Why do I recommend the FREE INK ROLLER PEN, and what are its advantages over other pens? Today we're going to talk about the FREE INK ROLLER PEN REFILL.
Liquid ink roller pens have the advantage of being heavier, easier to write on and more comfortable and smoother to use, but have the disadvantage of not being able to replace the refill. Liquid ink r...
RT GEL PEN combines the advantages of a fountain PEN and an oil-based ballpoint PEN. It is comfortable to write with a low ink viscosity and an appropriate lubricant.
Fountain Pen is a prototype that uses ink to flow automatically to the tip of the pen. To test the fountain pen's performance, we need to do the following experiments.
In fact, the disposable free ink pens and refills are white trash, which is definitely bad for the environment: the white plastic doesn't break down easily and can be hazardous to the soil when discar...
Free ink pens are mainly used ball ball ball in writing and paper direct contact friction, ball in the ball seat rolling, take out the ink or ink in the pen core, and follow-up water in the effect of ...
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