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الشخص الذي يمكن الاتصال به Ms. Melody
BUJI, SHENZHEN, GUANGDONG
Experiment prove: after notching hole, it can get good effect with hydraumatic splitter, static expand powder or explosive blasting , the distance between holes of granite may lengthen 2~4 times, the marble may lengthen 1.5~2 times, thus reduce drilling and powder cost. Drill first, then notch, notching time is only 1/*0 of that of drilling, operate conveniently, low cost.
