Boron powder, especially non-food grade boron powder, does pose certain health risks if ingested into the human body. Boron is a naturally occurring element widely distributed in the Earth's crust, water bodies and the atmosphere. Still, high levels of exposure to boron may have adverse effects on the human body.
Tungsten-copper rod is an alloy of tungsten, copper, and other elements. Copper content in commonly-used alloys ranges from 10% to 50%. Powder metallurgy is used to prepare the alloy. The alloy has high electrical and thermal conductivity. About
A cement foaming agent based on animal protein is made mainly from keratin proteins from the horns. This causes it to have an unpleasant odor. Coproduct, which is the product of several chemical reactions and physical treatments
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