What are the main applications of germanium materials?
Infrared optics: used in thermal imaging and night vision equipment.
Optical fibre communication: as optical fibre dopant to enhance transmission efficiency.
Solar cells: for space solar cells.
Semiconductor: used in high frequency devices and integrated circuits.
Catalysts: used in polymerisation reactions in petrochemicals.


Germanium material in the world energy status
China is one of the countries with the richest germanium resources in the world, with reserves accounting for about 41% of the world's total, mainly in Yunnan and Inner Mongolia. The lignite deposits in Yunnan and the associated germanium resources in Inner Mongolia are the main sources. China is the world's largest producer of germanium, with annual production accounting for more than 70% of the world.

Highly Recommended Germanium from Yutai Optics:
IR Germanium
Germanium Windows with DLC Coating
Spherical Germanium Lenses for LWIR
Germanium Aspheric Lenses
Germanium IR Longpass Filters