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In the fluid collapse accident, sand board as a rescue equipment is not uncommon.
"Integrated Emergency Sand-Flapper" is a collapsible N-type sandboard, which can be expanded and accumulated upward for different grades of fluid cave-in while saving space, so as to protect people trapped by quicksand and provide more rescue time.
"Integrated Emergency Sand-Flapper" can be also used as a stretcher when deployed, as a rescue and emergency equipment, in the first time to rescue the accident and transport the wounded.
Shenyang Ligong University