China's large tantalum and niobium ore.

Features: Tantalum deposits with small-scale, ore with low-grade, dissemination size dispersion, multi-metal associated, caused difficult to mine, separate, and choose, low recovery. Large-scale open-pit mining tantalum mines is fewer. There is no independent niobium mine in China and Niobium often associated with rare earths, and tantalum.

Anodic oxidation film of tantalum alloys is very stable.

Anodic oxidation film of tantalum alloys is very stable, with corrosion resistance, and excellent properties, suitable for the manufacture of electrolytic capacitors. Tantalum alloys has a very strong resistance to chemical corrosion properties, tantalum alloys can resist all organic and inorganic acid corrosion