"OSJA" brand glass fiber-reinforced resin-bonded grinding wheel using the international advanced production technology and a refined from raw and auxiliary materials, with very high Safety and excellence of the grinding.

The safe use of speed of 80m/s, can rest assured that the use of qigong in the polished and high-speed cutting, with enough High safety factor.

Hardness in the hard level and above, with a high grinding ratio, to a large quantity of iron and grinding wheel wear and grinding efficiency