First of all, when the pen tips are gathered together, the pen tips should be pointed. The pen tip is easy to write and express. Writers often weigh their pens, but if they are not sharp, they will become bald and lose their literary talent. When buying a new pen, the hair is glued and polymerized, which is easy to distinguish. When checking the old pen, first wet the pen and gather the hair, then you can distinguish the sharp baldness.
Second, after the fingertips are wet and flattened, the fingertips are flush. If the hair is even, the length is equal at ordinary times, and there is no gap inside. Because the pen needs to be completely wetted, it is difficult to check this when buying.
Third, the round finger pen is as perfect as the shape of jujube pit, which means that the hair is sufficient. If you have more hair, you will have enough pen power to write, otherwise you will lose weight and lack pen power. The pen is perfect. The pen can turn. When shopping, there is glue in your hair. Is it perfect? Just take a closer look.
Fourth, health is the elasticity of the pen waist; Press hard, lift the pen, and then return to its original state. If the pen is flexible, it can be used freely; Generally speaking, rabbit hair and wolf hair are more elastic than wool, and books are strong and firm. In this regard, press the pen after wetting, and the front is straight and healthy.