... 10 years production experience. 1.Widely used for machining kinds of copper , aluminum,stainless steel , ceramic and printing circuit board ... Zhuzhou Hongtong tungsten carbide Co.,Ltd--a professional maufacture of various cementd carbide products and Tungsten carbide products. Such ... as cemented carbide rods , carbide strips, kinds of carbide cutters,cold heading dies,drawing dies, carbide drills, ...