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To : Hejian RuiDa Petroleum Material Co.Ltd
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12 1/4& quot; Matrix body PDC drill bit/ diamond drill bit for oil explore/drill tools
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Hejian RuiDa Petroleum Material Co.Ltd
tricone bit,pdc bit,opener,drag bit,core bit
Address: No.12,BeihuanRoad,
Cangzhou, Hebei
China, 062450
Tel: 86-317-3232136
Fax: 86-317-3232136
