1) Co:10-13%.. 2) Grain size: 0.5-0.6um 3) DIN or ANSI standard 4) ISO9001:2008 5) Coated or not 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, located in Changzhou City, the Xixiashu industrial park. The Head office has its own mine, with the proven reserve of ...