Fluorescent paper, highlighters, scented pens, oil pastels and correction fluid all contain toxic substances. The correction fluid contains benzene, the whitening agent of fluorescent paper is a potential carcinogenic factor, and the fragrance of stationery is emitted by synthetic chemicals, containing harmful substances such as benzene, formaldehyde and lead.
If children have poor hygiene habits, they will eat without washing their hands after touching stationery, and they will also eat harmful substances in colored stationery. Long-term use of some stationery with color and smell can easily lead to symptoms such as headache, nausea, inflammation of eyes, nose and throat, which will damage the liver, kidneys and immune system. It is forbidden to cause leukemia, which is extremely harmful to health.
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Precautions:
1, the front of the nib, facing the left front, don't write to the nib. It's uncomfortable to draw the nib backwards to write. The nib will become thicker and thicker, and the poor quality nib will crack.
2. When using, the pen cap should be conveniently sleeved on the pen holder, which can prevent the pen from rolling down on the one hand, and the pen tip will not be broken because it is light in front and heavy in back on the other hand.
3. When writing, put a thin notebook or some manuscript paper under the paper to enhance the elasticity of the nib and reduce friction. Don't write on hard objects such as metal to avoid damaging the nib.
4. Cover the cap and shake the pen down a few times to let the ink flow to the tip. If it doesn't work, the pen isn't broken. It should be blocked by slag. Try washing the pen with water.
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Baidu encyclopedia-pen