Cemented Carbide HRA>91.5 TRS> 2600 Grain size 0.5, 0. ... Xixiashu industrial park. The Head office has its own mine, with the proven reserve of tungsten ore 500, 000 tons ... , with the production capacity of an annual output of 3, 000 ... tons of tungsten metal powder, 2, 000 tons of tungsten carbide powder, and 1, 500 tons of mixture. It's a ...