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83/4 "HM952XA بوصة 222.2 الجسم الصلب آبار النفط Pdc الحفر بت بت Pdc

مثقاب pdc آبار النفط، المعيار API، وحفر الآبار، ومثقاب المهنية، الماس مثقاب، أدلى في الصين مثقاب


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Кому: shannxi hainaisen petroleum technology Co.Ltd
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