deyi cnc stone engraving bits 60mm التصنيع عبر الإنترنت

4mm Tip Conical-type Granite Sandstone Diamond Engraving Bit Vacuum brazed technology, diamond grit is embeded in matrix very stably, high grain protrusion height Application material: marble, granite, ... قراءة المزيد

2mm Tip Conical-type Granite Marble CNC Diamond Engraving Graver Vacuum brazed technology, diamond grit is embeded in matrix very stably, high grain protrusion height Application material: marble, granite, ... قراءة المزيد