新一代黑亮单晶，其晶型较完整，中等强度。常用于树脂砂轮体系和陶瓷砂轮体系，最明显的优点是自锐性良好，磨削效率高，磨削寿命良好，一次成型率高。

CBN620 a new generation of black single crystal, the crystal shape is complete, moderate intensity. Commonly used in resin and ceramic grinding wheel grinding wheel system system, is the most obvious advantages of good self-sharpening, high grinding efficiency, grinding life is good, high molding rate at a time.