Yellow tungsten oxide is oxidized material of tungsten, appearance is yellow or yellow green powder. It is important raw material of tungsten powder, tungsten carbide products, tungsten metal products and tungsten alloy products. It is widely used in smart window due to its photochromism and electrochromism property.

Tungsten copper manufacturing methods include copper infiltration, powder metallurgy, co-reduction, mechanical alloying, high temperature liquid phase sintering, activation of liquid phase sintering, thermochemical method, plasma spraying, hot pressing sintered and spray drying method.

Tungsten carbide ball types include blank ball, polished ball, punching ball, bearing ball, valve ball, non-magnetic ball, hole ball, measuring ball, scraping chromospheres and pen ball.