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We usually need a funnel when we are lubricating a motorcycle. This is a funnel designed by changing the discarded cover. And then, we can lubricate a motorcycle conveniently.
Guangzhou Academy of Fine Arts
Guang Zhou, China
Weisi Li,
Guangzhou Academy of Fine Arts
Yixi Zhou,
Guangzhou Academy of Fine Arts
Xiaoru Shen,
LingNan Normal University
