The department adopts global leading production technologies to batch-produce Silicon Nitride, Zirconia and Aumina balls used for bearings and valves. The diameters of the balls are form 0.8mm to 50.8mm and the precision levels include Grass Five, Grass Ten, Grass Sixteen, Grass Twenty, Grass Hundred, etc. The output of the ceramic balls is over 50 million pieces annually, including finished balls and blank balls.