Located in Jiangdong Industrial Park of Xiaoshan Economic Development Zone in Hangzhou, Hangzhou Jia Cheng Machinery Co., Ltd. is one of the main manufacturers of Archimedes and Involute worm redactors in China. With first-class processing and testing equipment at home and abroad, our company has introduced the most advanced technology from the USA, Japan, Germany and Italy and has developed more than ten thousand of worm redactors with eleven series successively. Our products are widely used in many fields, such as metallurgy, stone material, woodwork, tobacco, foodstuff, leather, glass,...