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Çinli üretici/petrol alan/yüksek kalite/pdc bit/pdc matkap |
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punte, punte di trivello di PDC, PDC lame trapano, PDC corone diamantate, Hard Rock Oil Well PDC trapano di perforazione del pozzo di petrolio |
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tehty Kiinassa, hyvä laatu, diamond pdc poranterä, hiilen louhinta ja patojen rakentaminen, wholsale poranterä |
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