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91/2" HM652XA Čína dodavatel 2015 Hotselling PDC Vrtáky pro geologický průzkum Oilfield

Vysoce kvalitní EPH vyvrtejte Bit /oil vrták bit/standardní vrtání pdc drill bit / vrtné soupravy


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至: shannxi hainaisen petroleum technology Co.Ltd
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