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Why is the lead core of automatic pencil made of resin?

Source: Time:2018-03-06 14:35:55 views:

Lead core is no stranger to everyone. The lead core is graphite and clay, according to the national standard pencil, according to graphite, the concentration is divided into 18 types, and then it is made into thin pencil core widely used in the replacement core of automatic pencil. Now, the pencil core has a new addition - resin lead. Resin lead is more intense and less prone to breakage.
Lead core is no stranger to everyone. The lead core is graphite and clay, according to the national standard pencil, according to graphite, the concentration is divided into 18 types, and then it is made into thin pencil core widely used in the replacement core of automatic pencil. Now, the pencil core has a new addition - resin lead. Resin lead is more intense and less prone to breakage.

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