Cuprous oxide is an oxide of copper, a bright red powdered solid almost insoluble in water, can be disproportionated to copper bivalent and copper elements in acidic solutions and can be gradually oxidized to black copper oxide in wet air.

Hollow glass microsphere is a kind of glass microsphere that has been specially processed. Its main characteristics are that its density is smaller than that of a glass microsphere, and its thermal conductivity is worse.

Ferroferric oxide, chemical formula Fe3O4, commonly known as iron oxide black, magnet, magnetite and black iron oxide, is a kind of black crystal with magnetism. Also known as magnetic iron oxide.

Alumina is an inorganic chemical formula Al2O3, a high hardness compound melting point of 2054℃, boiling point of 2980℃, and ionizable ion crystals at high temperatures, often used to make refractory materials.

Sodium silicate, commonly known as bubble flower alkali, is a soluble inorganic silicate; its aqueous solution, commonly known as water glass, is a mineral adhesive.

boron carbide is an inorganic substance with the formula B₄C, usually grey-black powder, used for grinding, grinding, drilling and polishing hard materials such as cemented carbide and precious stones.

Colorless or yellowish translucent to a transparent glassy substance with hygroscopicity and strong alkaline reaction. It decomposes in acid and precipitates silicon dioxide. It is slowly soluble in cold water or almost insoluble in water (depending on it

Sodium silicate, commonly known as Paohua Alkali, is a water-soluble silicate, and its aqueous solution is commonly known as water glass, a mineral binder. Its chemical formula is R2O • nSiO2, where R2O is alkali metal oxide, and n is the ratio of the mol

Graphite powder is a kind of mineral powder, mainly composed of simple carbon, soft, black-gray; It is greasy and can pollute the paper

Hafnium carbide The English name is Hafnium carbide, CAS number is 12069-85-1, the molecular formula is CH4Hf, and the molecular weight is 194.5325.