1) Co:10-12%. 2) Grain size: 0.5-0.6um 3) ... 91.6 5) TRS 3800.. tungsten productsChangzhou Xili Alloy Tools Co., Ltd. is a joint venture of Jiangxi Golden Dragon Mining ... . Of Jiangxi, and the United States K Engineering Co., Ltd., It's from 2002, located in Changzhou City, the ... of APT, 3, 000 tons of tungsten metal powder, 2, 000 tons of tungsten carbide powder, and 1, 500 tons of mixture. It ...