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Our design is a combination of the whistle
and zip.When you meet the emergency ,the
radio waves come from the whistle can help
you wherever you are.You do not need to be
wory about danger any more if it belongs to
you.
jiangnandaxue
JiangSU WuXi, China
jiangnandaxue
JiangSU WuXi, China
文林森，马宗祎，蒋芷馨，陈子羽
