Holmium oxide, also known as holmium trioxide, has the chemical formula Ho2O3. Holmium oxide is a compound composed of rare earth element holmium and oxygen.

There is a crystal in nature, It is as mysterious as the pyramids of the Pharaohs of Egypt, and as gorgeous as material from another world.

Silver is an ancient antibacterial material. In ancient times, the Ancient Egyptians covered wounds with silver to prevent bacterial infections. More than a thousand years ago, Mongolian herdsmen knew to use silver vessels to keep milk from going bad.

Scandium oxide is one of the more important products in scandium products. Its physical and chemical properties are similar to those of rare earth oxides, so the production methods are also very similar.

Silver has been used as an antiseptic for more than a thousand years. It is a popular antibiotic in folk medicine, from treating bacterial and fungal infections to preventing milk from spoiling.

The chemical formula of yttrium oxide powder is Y2O3. The surface is white and slightly yellowish powder. This substance is insoluble in water and alkali, but soluble in acid.

Nanotechnology is also easy to understand. In simple terms, it is a technology that USES individual atoms and molecules as building blocks to build materials.

Titanium alloys can also be used as fuel and oxidizer tanks and high pressure vessels. Titanium alloy has been used to manufacture automatic rifles, mortar panels and the firing tubes of recoilless guns.

Immune colloidal gold marked technology based on nano colloidal gold (often referred to as "colloidal gold) as tracer marker application in the antigen antibody detection of a new type of immune markers.

Hafnium is useful because it emits electrons easily (eg as a filament for an incandescent lamp). Alloys of hafnium and tungsten or molybdenum are used as electrodes for high voltage discharge tubes.