Tungsten wire history is closely connected with lighting industry.

In 1878, T. A. Edison invented carbon filament lamp bulb. While, this kind of lamp bulb has too short service of life. 20 years later, carbon filament was replaced by osmium filament and tantalum filament. However, the melting points of osmium and tantalum are low and the working temperature and light performance are low.

In 1903, Hungary firstly produced tungsten filament according to A. Just and F. Hannaman’s patent.

Although only a small amount of tungsten ore is finally made into tungsten filament and other similar products, the most important meaning for tungsten in science and technology is to transform research results into practical application. The knowledge gained in the field of new powder metallurgy, especially in the hard metal manufacture has the inestimable value.

For the past 22 years, Zhengzhou Sanhui Co., Ltd-tungsten manufacturer- has been specializing in tungsten products for the world market and varied fields. To provide our clients worldwide with the highest quality products and services, we complete everything-from material, manufacturing to testing -in our ISO 9001:2008-certified factory. Our long-term partners in US and India have benefited from us for more than 10 years.

Come to us for various tungsten products.