MGD30 is a combination of regular and angular crystals, medium-low toughness with blocky shaped crystals, this shape improves the retention of the diamond and the matrix. It is suitable for low demanding conditions where sharpness is a key factor.

MGD40 contains a relatively high portion of angular crystals with medium touhness. Suitable for relatively low demanding conditions, like beveling of glass and crystal, and grinding of carbide and magnetic materials, etc.

MGD50 is of medium high toughness with regular and blocky crystals. Relatively high thermal stability and impact resistance. It's deal to make grinding & abrasives wheels to process medium load materials, like core drilling of glass, pencil edging, and engraving decorative glass and crystal.

MGD70 contains a high level of cubo-octahedral crystals, high impact strength and thermal stability. The breaking strength of diamond particles bring a good life span and sharpness. Applied in the condition requiring high grinding rate, like electroplated tools to grind and polish stones, ceramics, glasses, and magnetic materials, etc.

MGD90 has the uniform shaped cubo-octahedral crystals, extremely high impact resistance and thermal stability with minimal internal impurity. It is applicable for more demanding and strong impact conditions with superior surface finish quality.