Zhuzhou Dongya Tools Co., Ltd. is a joint venture between Zhuzhou Xiangfa Tools Co., Ltd. and Brazil's BIG AMERICAN Company. It is a high-tech joint-stock foreign-invested enterprise integrating R&D, production and sales of cemented carbide and cemented carbide tools. The company is located in China's cemented carbide production base - Zhuzhou Lukou Economic Development Zone. It has introduced the most advanced pressure sintering furnace, cold isostatic pressing, automatic press, subsequent internal stress relief treatment system and other production equipment and complete quality Control and testing equipment adopt scientific and advanced production technology to ensure product quality and stability, among which BIG AMERICAN series products are supervised by BIG AMERICAN company throughout the process.