Hangzhou Xiangsheng Abrasive Machine Manufacturing Co.,Ltd.(Jonsen) is a research and development, design, production, sales and service in one of the brands. We are specialized in the field of metal surface grinding and deburring technology. The company started this business in 1993. Research and innovation is our motivation of going forward. Four Series(SD/SB/SP/SG) machines are widely used in Metal, Wood, plastic and other materiel. Jonsen also design and build special use grinding and deburring machines. We strive to serve and offer every solution for customer!