Tellurium is widely used in metallurgy, petroleum, chemical industry, aerospace, electronics and other fields.

Cerium oxide is a light yellow or yellowish brown powder. The bulk density is 7.13g/cm3, the melting point is 2397℃, and the boiling point is approximately 3500℃.

Selenide tungsten (WSe2) is a type 2 d material graphene, its structure is composed of the upper layer of selenium atom connection between tungsten atoms 1 layer, high electrical conductivity, atomic thickness.

The pure bismuth trioxide (bismuth oxide) has α type, β type and δ type. α type is yellow monoclinic crystals, relative density 8.9, melting point 825 ℃, soluble in acid, insoluble in water and alkali.

Oil, natural gas, coal and other non-renewable energy dries up, the energy problem has become a bottleneck restricting the development of international economy, plus the pressure of the environment quality in declining.

Nitinol alloy has a series of excellent properties, which make it widely used in aerospace, automobile industry, medical equipment and other fields.

Germanium oxide is a kind of white powder, it is hexagonal crystal system, tetragonal crystal system or amorphous solid.

Chrome piece should be familiar with all kind of health care products, because of the chromium element in the process of the functioning of the human body play an important role.

Titanium is a very excellent metal material with high strength, low density, high hardness, high melting point, corrosion resistance, and high purity titanium with good plasticity, is an ideal metal 3D printing material.

Tin oxide is white, light yellow or light gray tetragonal, hexagonal or orthorhombic crystal powder. The melting point is 1630℃, the boiling point is 1800℃, and it is also an excellent transparent conductive material.