Removing rust from a vehicle is really important. Rust is the formation of iron oxide and it occurs when an electrolyte, cathode and anode come togeth
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One of the most important invention in 21st century was the development of mobile phones that can take pictures on just one click. Suddenly, customers
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Hand sirens have been in use since a long time. Whether it is for warning the civilians and military personnel to evacuate during a war or alerting ab
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