Brass Material For Door Knobs
Doorknobs are often made of brass because the material is resistant to bacteria buildup. So many people will hold the doorknob, so it is important that it does not spread infection! We thank whoever thought of using brass.
Brass Material For Door Knobs
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Bottle Cap Discs
A soda bottle cap comes with a plastic disc under it because the disc helps people see through carbonation. The exact science is unknown to us, but the disc keeps the carbon dioxide in the bottle. This way soda does not lose its fizz.
Bottle Cap Discs
