The product descriptionCoring PDC drill bit is mainly used in coal mine, water conservancy and hydropower, building construction and other industries ...
The product description Coring PDC drill bit is mainly used in coal mine, water conservancy and hydropower, building construction and other in...
Diaomnd Brush Frankurt Abrasive1. High processing efficiency, long grinding life.2. Abrasive brush is used to process all ...