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13 3/4" HM652XAG 5 lama singola fila matrice corpo petrolio Pdc punte di diamante

petroliferi trapano bit olio rig trapano punta roccia bit alta qualità diamante foratura punte di perforazione direzionale

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Amb professional i productiu de fàbrica,Website:, HAINAISEN és una dels principals fabricants de mica de dents d'acer de Xina. Benvingut a mica den...
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thép cơ thể khoan, chất lượng tốt, giá thấp nhất, petroelum khoan bit, hard rock khoan chút, đá khoan bit, pdc khoan chút chút khoan kim cương
雙排 Pdc 鑽頭、 矩陣體 Pdc 鑽頭
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