Zhoushan sanzhou polishing material co.,ltd. is located in the zhoushan island. as a professional manufacturer of producing glass polishing material, our products include all kinds of grinding wheel such as diamond wheel,resin wheel,bk wheel,bd wheel,cnc engraving wheel,10s series etc. since the company have been established in 2000, we own good reputation in both domestic and foreign market because of strict quality control system,scientific decision-making mechanism.