Classification of refills, all needle tubes, half needle tubes, bullet heads, gourd heads and refills should be used correctly, otherwise it will cause uneven oil output of refills, and neutral refills can be assembled with a miniature pen maker.
A tube with ink or ink in a ballpoint pen or tap water pipe, with a metal nib at the front end and a writing ball embedded in the nib, also referred to as a graphite strip in a pencil (pencil lead). The refill is a rubber tube or a suction tube in the pen tube.
Extended data:
The fragrance of the refill is actually produced by adding synthetic spices, which probably contains benzene, aldehydes and other substances. Although the content of these substances is very small, long-term exposure is harmful to children's health. Regular and long-term use of these stationery is definitely harmful to children's health. The refill with perfume will contain organic solvent;
Organic solvents are volatile chemicals. These solvents enter the human body by volatilization, which irritates the respiratory mucosa, and in severe cases, it will cause harm to the nervous system and blood system of children. Children will have dizziness, nausea, insomnia and other symptoms.