Boron carbide is hard, black, and shiny. Its hardness is lower than industrial diamond but higher than silicon carbide.

High purity graphite powder is soft, black gray powder, and has high-temperature resistance, electric conductivity, lubricity, chemical stability, plasticity, and thermal shock resistance. 

Nano silicon powder refers to crystalline silicon particles less than 5 nanometers (billionths of a meter) in diameter.

Amorphous boron powder is an odorless dark brown powder that is stable in air at room temperature and can be oxidized when heated to 300℃ and ignite when heated to 700℃.

Aluminum nitride, covalent bond compound, chemical formula is AIN, is an atomic crystal, belongs to diamond-like nitride, hexagonal system, wurtzite crystal structure, non-toxic, white or off-white.

Vanadium nitride VN is a compound of vanadium and nitrogen.

Gallium nitride is an inorganic substance with the chemical formula GaN, which is a compound of nitrogen and gallium.

Bi2O3 bismuth oxide powder is one of the most important bismuth compounds.

Manganese trioxide is an oxide with a chemical formula of Mn2O3 and a molecular weight of 157.88.

Spherical quartz powder is made of natural quartz stone after purification and ultra-fine grinding, and through a certain high temperature field, its phase, crystal form and shape change instantaneously, from solid state to molten state and then to solid