1. ISO 9001:2008 2. body is 42CrMo steel, button is carbide 3. HIP sintered for button 4. from Zhuzhou city, Hunan, China road milling toolWe are a manufacturer of tungsten carbide buttons in China.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.