Zhuzhou Watt Carbide Co., LTD, na matatagpuan sa Zhuzhou, Hunan, China. Pangunahing gumagawa ito ng mga carbide insert, milling insert, carbide cutting insert, cnc insert, carbide turning insert, carbide threading insert, carbide end mill, tungsten carbide end mill tools atbp. Milling inset na tagagawa.