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الشخص الذي يمكن الاتصال به Ms. fei
Tongbai, Zhengzhou, Henan
1. PDC Coring bits is with Polycrystaline diamond compact cutters. 2. Suitable for soft to medium hard formation.(f≤*0). 3. With increased wear resistance and efficient drill bits performance. 4. Optimize the drilling cost-effective with high drilling rate and long durable working time. Specification:Φ *7/*5 Φ*4/*8 Φ**3/*3 Φ**3/**3 Φ**3/**3
