1.long service time 2.swift delivery 3. 100% virgin material 4. sample available 5.wear and tear resistance Zhuzhou Dongya Tools Co. Ltd is a specialized manufacturer, trader, exportor of cemented carbide products, such as cemented carbide drill bit, brazed tips,wear parts, rods and strips, non-standard products, which located in Zhuzhou, Hunan, P.R. China. Our company has experience in this ...