Calcium hydride is a compound with the chemical formula CaH2, so it is an alkaline earth metal hydride. This gray powder (pure white, sometimes white) reacts violently with water and releases hydrogen. Therefore, CaH2 is used as a desiccant.

Calcium hydride is an inorganic substance with a chemical formula of CaH2 and a molecular weight of 42.10. Grayish-white crystal or lump, easily deliquescent, used as reducing agent, desiccant, chemical analysis reagent, etc.

Boron carbide, also known as black diamond, is an organic substance with a molecular formula of B₄C, usually gray-black fine powder.

Molybdenum disulfide powder is an inorganic substance with the chemical formula MoS2, which is the main component of molybdenite.

Boron nitride powder is white color, it is a crystal composed of nitrogen atoms and boron atoms. The chemical composition is 43.6% boron and 56.4% nitrogen.

Aluminum powder, commonly referred to as "silver powder", is a silver metallic pigment. It is made by adding a small amount of powder to pure aluminum foil, crushing it into scaly powder, and then polishing it.

Titanium nitride is a refractory compound with high microhardness and chemical and thermal stability.

Micro-silica fume is also called silica fume or condensed silica fume. When ferroalloys are used for smelting ferrosilicon and industrial silicon (metal silicon), many highly volatile SiO2 and Si gases are produced in the mine thermoelectric furnace.

The chemical formula of zinc nitride Zn3N2, gray crystal, soluble in hydrochloric acid. It quickly decomposes into zinc hydroxide and ammonia in cold water.

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