A hand throwing drone, also known as a hand-launchable drone, is a type of unmanned aerial vehicle (UAV) that is designed to be manually launched into the air by hand. These drones are typically small and lightweight, making them easy to transport and dep
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Chemical formula ZnSO4, is the most important zinc salt, for colorless rhombic crystal or white powder, its seven hydrate (ZnSO4·7H2O) commonly known as white alum, is a natural mineral. Soluble in water, and store in a sealed and cool place.