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By certification 
Features:
1 Energy-saving and more durable due to high quality of alloy steel materials and advanced heat treatment adapted.
2. Good flushing effect ensure high drilling rate.
3. Good hole cleaning ability.
4. We can design and manufacture according to customer’s requirement of the Bit
Diameter,NO. of air holes,button shape and the face shape.
1 Energy-saving and more durable due to high quality of alloy steel materials and advanced heat treatment adapted.
2. Good flushing effect ensure high drilling rate.
3. Good hole cleaning ability.
4. We can design and manufacture according to customer’s requirement of the Bit
Diameter,NO. of air holes,button shape and the face shape.
