1) Co:10-13%.. 2) Grain size: 0.5-0.6um ... coated... Changzhou Xili Alloy Tools Co., Ltd. is a joint venture of Jiangxi Golden Dragon Mining Co., Ltd. Of Jiangxi, and the ... United States K Engineering Co., Ltd., It's from 2002, ... of APT, 3, 000 tons of tungsten metal powder, 2, 000 tons of tungsten carbide powder, and 1, 500 tons of ...