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9 1/2" ХМ642XА високог квалитета АПИ ПДЦ процедуру угризао за нафтно поље од кинеског произвођача

Кинески произвођач/нафтна поља/високог квалитета/пдц битова/пдц бургије


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至: shannxi hainaisen petroleum technology Co.Ltd
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caliente sell.drill bit inserts.professional bit.sandstone de taladro de pdc perforación .hard formstion petróleo y perforación de gas
高品質 Pdc ドリル ビット/oil ドリル ビット/標準掘削ドリル pdc ビット/掘削リグ
fornecimento de China, pouco bom estado, broca do corpo de aço, boa qualidade, pedra bits, broca pdc, brocas diamantadas de perfuração
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