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Projection firecrackers / product

Projection firecrackers
Projection firecrackers

It’s easy to hurt themselves when children are setting off fireworks.We can use a tiny projector to avoid the danger.Shadow the fireworks on the projector,when the children press the switch the fireworks will be set off,and make a sound through a sound equipment.Not only can this design solve the safe problem,but also it can reduce the environmental pollution.

University

Shandong University.

Shandong University.
China.
Ji'nan, China

Gen Li,
Shandong University.

Lian Cui,
Shandong University.

Zezhong Dai,
Shandong University.

Yuke Yan,
Shandong University.