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This is a cheap inflatable buoy.There are many rivers and lakes in the countryside. In the summer there will be many children swimming in the river. This is very dangerous. Every year, 360,000 people die of drowning. This product can be bought at a very cheap price. To, and carry it with you, allows children to practice swimming in the water and improve the safety of swimming.
Jiangxi Normal University
NanChang, China
Xinyu Zhang,
Jiangxi Normal University
Yannjun Zhang,
Jiangxi Normal University
Nan Wang,
Jiangxi Normal University
An Yan,
Jiangxi Normal University