Lithium stearate is the lithium salt of stearic acid. It comes from lithium hydroxide and cooking butter or other animal fats.

Boron can be prepared in several crystalline and amorphous forms.

Copper oxide is an inorganic substance. Copper oxide chemical formula is CuO.

Magnesium stearate appears in the list of ingredients in most supplements as an additive.

Tantalum disilicide chemical formula is TaSi2. It has excellent properties such as high melting point, low resistivity, corrosion resistance, high temperature oxidation resistance, and good compatibility with silicon, carbon and other matrix materials.

Expandable graphite or exfoliated graphite is made from the naturally occurring mineral graphite.

Boron nitride ceramic is a kind of thermally and chemically stable refractories, which is composed of boron and nitrogen.

Alumina is an excellent electrical insulator, which can resist extremely high current, and its electrical resistance increases with the increase of its purity.

Aluminum nitride is a kind of refractory composite ceramic material with hexagonal wurtzite structure.

Silicon carbide or carborundum has been an important material for sandpaper, grinding wheels and cutting tools since the late 19th century.