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Smart Case for Calculator / Calculator holster

Smart Case for Calculator
Smart Case for Calculator

People have to use pen and paper to aid their memory, especially while making complicated calculating. This has, to some extent, lowered efficiency and wasted paper resources.Scratches always appear when we finger-flip on the cloth with soft nap, but the scrapes will vanish when we rub over it with our palm.
A leather jacket with a fuzzy inner side will facilitate marking and writing via fingers. The fine hair would recover for the following use by just wiping it with a palm.

University

GuangZhou Academy Of Fine Arts

GuangZhou Academy Of Fine Arts
GuangZhou, China

Wanli Yang,
GuangZhou Academy Of Fine Arts