In 2001, we completed the construction of a new production line for pneumatic tools in addition to our diamond tool workshop.  We’ve gradually expanded our product line over the past twenty years, including Rear Exhaust Air Polisher, Side Exhaust Air Polisher, Mini Air Grander, and Air Grinder Machines. All of these air polishers use water to polish stone. Due to all these years of experience and many improvements, our technology is very mature and very popular at home and in many European and American markets.