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lifebuoy cannot throw very far and it is inconvenient to carry. Life Grenade is a new concept lifebuoy. Before contact water, it is a small can. It can be carry easily and throw very far. When it falls into water, the chemical composition will release gas to blow up the buoy quickly.
Shenyang Aerospace Univercity
Shenyang, China
Shenyang Aerospace Univercity
Shenyang, China
Jin Xin
Gao Wei