... parts etcSubsidiary PlantsNumber/ yearly capacityTungsten MinesFourteenAPT Plant6000tonsPowders Plant (WC)3000tonsCemented Carbides Plant600tonsMain Equipments2 PVA vaccum sintering furnaces ( ... 0.25 N: 0.8 Na: 0.005 K: 0.005 Ca: 0.007 S: 0.034.Particle size ... , electronics, metallurgy, machinery, textile industry, aviation, etc. WC/TIC is normally used for producing cemented carbides.Packing: In ...