Aviation Eternal Pen

Environmental protection: one can hold more than 100 pencils, no lead, non-toxic, harmless, safe, packaging using degradable materials, compared with other packaging in a short time can be completely degraded. Features: erasable, smooth writing, dust-free (in the writing process, avoid dust caused by the friction of the brush head into the user's respiratory tract, avoid respiratory tract infection) 1 meter wear of ordinary wooden pencil is about 1.8mm, and the theoretical writing is about 100 meters. The theoretical writing length of this product is 172 times that of an ordinary wooden pencil. ""Write not to finish"" is only relative to the wooden pencil, not forever write not to finish. if the underline length of each word is 3cm, the product can write about 500,000 words.