Some technical details to pay attention to in purchasing gel pens, neutral advertising pens are shallow intuitive interpretations of the matter, in fact, if the real truth, Oh, it is estimated that you can write a book

 

1, pen tip.

 

Tip diameter. Asians prefer beads 0.5 mm or less in diameter. Portraits of Europe and the United States are big caliber beads.

 

Bead materials are tungsten carbide, stainless steel, and ceramic. The overall performance is tungsten carbide.

 

Ball valve seat material. Nickel - copper - nickel alloy, stainless steel, brass. Better overall stainless steel performance. Easy to Rusty Copper, Nickel, Copper, Nickel Alloy Nickel content is a problem for many manufacturers and therefore requires special attention.

 

2, ink. Ink pen ink technology is not yet mature, storage, processing, transportation problems, prone to various problems. So be careful. There are several ways to test writes. Neutral pen manufacturers can be judged by other factors. As the bubbles in the ink are very obvious, the manufacturer does not have a good control. In addition to a glass, together, the neutral ink manufacturer's deviation of 5-10mm ink height is reasonable. If it exceeds, advise you not to buy.

 

3, finally plug crude oil. Refined with mineral oil. Petroleum refining is generally colorless and transparent, with less impurities and better performance than yellow tail plug oil. It can also be judged by writing that tail-plugging can be a good follower, which is very important.

 

4, tube. Profiteers are always doing very fine internal diameter pipes. Therefore, the ink seems a lot. Some profiteers simply think that consumers, I will not pay attention to the amount of filling. Pay special attention. Everybody's supplier in China, they compare the standard refill tube, for reference.

 

5, rubber ball. Sealing the tip rubber ball, we must not underestimate this little thing. Otherwise, the ink-dry ink complaint will accompany you. Check the depth of view to see if you can really ensure the seal. In addition, the flexibility of a better rubber ball is definitely assured.

 

6, December. Rebound gel pens, please note if it is easy to fall off.