1.strict process control 2.high efficiency 3.long grinding life and good result 4.professional manufacturer Saucer shape diamond grinding wheel: 1.Long life and stable performance 2.Good cutting result and high efficiency3.Shape:parallel,round,saucer,cup,fei-shaped dish,bowls ect. 4.Diamond grinding wheel can be highly efficient grinding and polishing glass crystal and other handicrafts. Special ...