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91/2" HM952XA nejlepší prodej velkoobchodní pískovec Pdc provrtejte vrtákem pro těžbu ropy a zemního plynu vrtání

Těžby ropy, zemního plynu vrtání, dobrá kvalita, hornictví,


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H HNS M-เมตริกซ์ 19 9-ตัด 4 4 ใบมีดระดับจังหวัด 2 ลำดับแถวเดี่ยว X G PDC ตัดทำในจีน
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Fila dupla broca Pdc, Matrix corpo Pdc broca
Произведено в Китай, добро качество, diamond pdc свредло, въглища добив и язовир строителство, едро със свредло
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