1, deli
Deli Tools (Yuyao) Co., Ltd. is a famous trademark in Ningbo, a governing unit of China Hardware & Electric Business Association, and a modern enterprise specializing in producing high-grade combination tools and other hardware tools.
2. Morning light
Zhonghao Chenguang Chemical Research Institute Co., Ltd. is a high-tech enterprise, a national innovative pilot enterprise, a national core enterprise of new materials in Zigong, and an industrial enterprise with independent innovation capability in China.
3. Zebra
Zhen Zhen Zebra Technology Trading (Shanghai) Co., Ltd., a well-known brand of bar code printer, ribbon and world-renowned ballpoint pen, started with 1969, and is one of the fastest growing enterprises in the United States.
Matters needing attention in buying black ink pens:
1, choice of pen tip
The shape of the pen tip is generally divided into bullet type, needle tube type and half needle tube type. The bullet type is suitable for making a thicker pen, the needle type is suitable for making a thinner pen, and the half needle tube is between the bullet and the needle tube: the nib can be as thin as the needle tube, and the tail end of the pen is as big as the tail end of the bullet. The semi-needle tube type can be made into a relatively thin nib.
Step 2 observe the ink
Observe whether there is enough ink (generally accounting for two-thirds of the pen, or more) and whether there is water cut off in the middle. Also observe whether there are bubbles in the ink. If there are a lot of bubbles and they are very obvious, it means that the manufacturer does not have a good control and this pen cannot be bought. Finally, observe the ink color. Looking at the color of ink is actually choosing the writing color of the pen you need.
Baidu Encyclopedia-Deli Shop