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Funnel pencil sharpener / Funnel pencil sharpener

Funnel pencil sharpener

Design Notes: This is a different caliber according to beverage bottles cups
and other containers designed sharpener. The outer wall of the inner recesses
of different diameter silica gel tube to increase its robustness, can be applied
on any diameter beverage bottles, cups mouth full use of wasteresources,
environmental protection, to achieve the recycling of resources.


Yanshan University

Yanshan University
Qinhuangdao, China

Hongyan Zhang,
Yanshan University