1.ISO 9001:2008 2.WC88%, Co12% 3.from Zhuzhou, Hunan, China 4.HIP sintered 5.having 8 patents tungsten carbide pipes We are tungsten carbide manufacturer. Our aim is to let more and more customers in the world choose and love our tungsten carbide products.Welcome to visit to Zhuzhou Jinding Cemented Carbide Co., Ltd.